Coordinate Geometry - SSC
What is the length of the arc of a circle whose radius is 35 cm and arc subtends an angle of 36° at the centre of the circle?
(Take π = 22/7)
- A.
44 cm
- B.
22 cm
- C.
10 cm
- D.
220 cm
Answer: Option B
Explanation :
Length of an arc = θ/360° × 2πr
= 36/360° × 2 × 22/7 × 35
= 1/10° × 2 × 22 × 5
= 22
Hence, option (b).
Workspace:
A solid metallic cube of side is cm, is melted and recast into a cuboid of length 12 cm and breadth 9 cm. What is the length (in cm) of the longest diagonal of the cuboid?
- A.
19
- B.
18
- C.
15
- D.
17
Answer: Option D
Explanation :
Side of the cube
Volume of the cube = = 864
Volume of the cuboid = 12 × 9 × height = 864
⇒ height = 8
Longest diagonal of the cuboid is the body diagonal
∴ Longest diagonal = = 17
Hence, option (d).
Workspace:
If the curved surface area of a closed cylinder is 225 cm2 and the area of its base is 169 cm2, then find the total surface area of the cylinder.
- A.
394 cm2
- B.
343 cm2
- C.
563 cm2
- D.
195 cm2
Answer: Option C
Explanation :
Workspace:
In the following figure, ∆ABC is an inscribed triangle as shown and DE is an tangent to the circle at C. If m∠ACD = 65° and m∠ACB = 35°, find the measure of m∠BAC
- A.
80°
- B.
75°
- C.
60°
- D.
65°
Answer: Option A
Explanation :
In the given circle, m∠ACD = m∠ABC = 65°
[Anglel made by tangent and a chord is same as angle subtended by same chord in opposite segment of the circle.]
In ∆ABC,
∠ABC + ∠BCA + ∠CAB = 180°
∴ 65° + 35° + ∠CAB = 180°
⇒ ∠CAB = 80°
Hence, option (a).
Workspace:
If two supplementary angles differ by 74°, then one of the angles is:
- A.
65°
- B.
55°
- C.
43°
- D.
53°
Answer: Option D
Explanation :
Let the two angle be x° and x + 74°
⇒ x + x + 74 = 180°
⇒ 2x = 106
⇒ x = 53°
The two angles are 53° and 127°.
Hence, option (d).
Workspace:
A wall 10 m long, 5 m high and 20 cm thick is to be constructed using bricks of dimensions 25 cm × 20 cm × 10 cm. How many bricks are required?
- A.
2450
- B.
2000
- C.
2500
- D.
2050
Answer: Option B
Explanation :
Workspace:
The total surface area of a solid cylinder whose radius is r cm and height cm (in cm²) is:
- A.
3π
- B.
4πr²
- C.
3πr²
- D.
3π
Answer: Option C
Explanation :
Workspace:
The diameter of the base and the slant height of a right circular cone are 10 cm and 16 cm, respectively.
Find its total surface area.
[Use π = 22/7]
- A.
cm²
- B.
cm²
- C.
330 cm²
- D.
cm²
Answer: Option C
Explanation :
Workspace:
The maximum number of 4m 50 cm 20 cm slabs that may be stored in a 16m long, 12m wide, and 4m deep trench is:
- A.
1910
- B.
1890
- C.
1960
- D.
1920
Answer: Option D
Explanation :
Workspace:
If the length of the diagonal of a cube is cm, then the length of the edge of the cube is:
- A.
6 cm
- B.
4 cm
- C.
2 cm
- D.
3 cm
Answer: Option A
Explanation :
Workspace:
If a solid piece of iron in the form of a cuboid, of dimensions 49 cm 33 cm 24 cm, is moulded to form a solid sphere, then the radius of the sphere is ______.
[Use π = 22/7]
- A.
16 cm
- B.
10 cm
- C.
18 cm
- D.
21 cm
Answer: Option D
Explanation :
Workspace:
The volume of a cube is 5832 cm3. Find its total surface area.
- A.
1944 cm2
- B.
1672 cm2
- C.
1824 cm2
- D.
1536 cm2
Answer: Option A
Explanation :
Workspace:
A metallic solid cuboid of dimensions 36 cm × 18 cm × 12 cm is melted and recast in the form of cubes of side 6 cm. Find the number of cubes so formed.
- A.
38
- B.
40
- C.
34
- D.
36
Answer: Option D
Explanation :
Workspace:
The sum of the length, breadth and depth of a cuboid is 23 cm, and its diagonal is 5√7 cm. Its surface area is:
- A.
144 cm2
- B.
177 cm2
- C.
188 cm2
- D.
111 cm2
Answer: Option B
Explanation :
Workspace:
Find the total surface area of a cuboid whose length is 20 cm, width is 15 cm, and height is 8 cm.
- A.
1160 cm2
- B.
990 cm2
- C.
1120 cm2
- D.
1080 cm2
Answer: Option A
Explanation :
Workspace:
The diagonal of a cube is 24 cm. Find its total surface area.
- A.
1152 cm2
- B.
1252 cm2
- C.
1100 cm2
- D.
1366 cm2
Answer: Option A
Explanation :
Workspace:
Calculate the area of the quadrilateral formed with the vertices (-3,2),(5,4),(7,-6) and (-5,-4).
- A.
80 square units
- B.
160 square units
- C.
0 square units
- D.
150 square units
Answer: Option A
Explanation :
Workspace:
How many 25 cm 11.25 cm 6 cm bricks will be required to construct an 8 m 6 m 22.5 cm wall?
(ignoring other material used)
- A.
7020
- B.
6400
- C.
5800
- D.
6800
Answer: Option B
Explanation :
Workspace:
If the height and slant height of a right circular cone are 8 cm and 10 cm, respectively, then the volume of the cone is (use 7t = f ): ( correct the two decimal places)
- A.
200 cm3
- B.
301.71 cm3
- C.
258 cm3
- D.
299.45 cm3
Answer: Option B
Explanation :
Workspace:
From the body of a solid cube of edge 7 cm, a solid sphere is removed. The volume of the remaining solid was found to be 163 cm³. What is the diameter (in cm) of the sphere?
- A.
5
- B.
10
- C.
8
- D.
7
Answer: Option D
Explanation :
Workspace:
Exactly midway between the foot of two towers P and Q, the angles of elevation of their tops are 45° and 60°, respectively. The ratio of the heights of P and Q is:
- A.
1 :
- B.
3 : 1
- C.
1 : 3
- D.
: 1
Answer: Option A
Explanation :
Workspace:
Chords AB and CD of a circle, when produced, meet at the point P. If AB = 6.3 cm, BP= 4.5 cm, and CD= 3.6 cm, then the length (in cm) of PD is
- A.
4.8cm
- B.
3.5 cm
- C.
3.1 cm
- D.
5.4 cm
Answer: Option D
Explanation :
Workspace:
A cylindrical vessel of diameter 32 cm is partially filled with water. A solid metallic sphere of radius 12 cm is dropped into it. What will be the increase in the level of water in the vessel (in cm)?
- A.
27
- B.
9
- C.
72
- D.
2.25
Answer: Option B
Explanation :
Workspace:
If the length of a diagonal of a square is ( a+b ), then the area of the square is:
- A.
+
- B.
(a² + b²)
- C.
(a² + b²) + ab
- D.
a² + b² + 2ab
Answer: Option C
Explanation :
Workspace:
What is the difference in the volume (in cm3) of a sphere of radius 7 cm and that of a cone of radius 7 cm and height 10 cm?
(use π = 22/7)
- A.
205
- B.
704
- C.
924
- D.
1078
Answer: Option C
Explanation :
Workspace: