Question 23
Mensuration of Plane ShapesOne side of a rectangle is 8cm and the diagonal is 10cm. What is the area of the rectangle?
- A.80cm2
- B.48cm2
- C.40cm2
- D.36cm2
- E.24cm2
Show the answer and explanation
Answer: B (48cm2)
Explanation
The other side is √(102 − 82) = √36 = 6 cm, so the area is 8 × 6 = 48 cm2.