Question 49
Mensuration of Plane ShapesA side and a diagonal of a rhombus are 10 cm and 12 cm respectively. Find its area.
- A.20 cm2
- B.24 cm2
- C.48 cm2
- D.96 cm2
Show the answer and explanation
Answer: D (96 cm2)
Explanation
The diagonals bisect at right angles: half of the other diagonal = √(102 − 62) = 8, so it is 16 cm. Area = ½ × 12 × 16 = 96 cm2.