Question

STUCK 30 POINTS

10. A a square and a rectangle have equal areas. The rectangle is 64 cm by 81 cm. What is the perimeter of the square?

A. 72 cm
B. 144 cm
C. 288 cm
D. 5,184 cm

Answer 1

The answer is c.288 since 64*81=5184 and the square root of 5184 is 72 and 72*4=288

Answer 2

288 cm.

Explanation:

Area of the rectangle = 64 * 81 = 5184 cm^2 which is also the area of the square.

The side of the square = √5184 = 72 cm.

So the perimeter of the square = 72 * 4

= 288 cm.