Area of the given figure is 60 cm2. Length of the diagonal BD is equal to
Explanation:
If the length of a diagonal and that of the two perpendiculars drawn from that diagonal to the other two vertices are known, the area of the quadrilateral is given as:
Area of a quadrilateral = 1/2 × (h1 + h2) × d where d is the length of the diagonal and h1 and h2 are the lengths of the two perpendiculars.
∴ 60 = 1/2 × (4 + 6) × BD
∴ BD = 12 cm.
Hence, option (b).
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