Find the area of Rhombus one of whose diagonals measures 8 cm and the other 10 cm ?

A. 47 cm2

B. 34 cm2

C. 40 cm2

D. 64 cm2

Answer : C. 40 cm2

Explanation 1:

Area of triangle formula = 1/2*(base)*(height)
Area of one triangle = 1/2 * (4) * (5)
= 10 cm2.

Total area of rhombus = 4 * area of one triangle
= 4 * 10
= 40 cm2

Explanation 2:

Area of a rhombus is = 1/2 * (length of one diagonal) * (length of another diagonal)
= 1/2 * 8 * 10 cm2
= 40 cm2

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