SOLUTION: a square and a rectangle have the equal ares. The rectangle is 20cm by 5cm. What is the perimeter of the square?

Question 661955: a square and a rectangle have the equal ares. The rectangle is 20cm by 5cm. What is the perimeter of the square?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
The area of the rectangle is
.
If the side of the square is cm long, its area, in is
.
If the area of the square and the rectangle are equal,
--> because <--->
So the side of the square is long.
The perimeter of the square is four times the length of the side, so it is

RELATED QUESTIONS
A square and a rectangle have equal areas. If the rectangle is 4 inches by 64 inches,... (answered by Fombitz)

a square and a rectangle have equal area. if the rectangle is 36 cm by 25 cm, what is the (answered by ewatrrr)

A square and a rectangle have equal area.The rectangle is 64 cm by 81 cm. What is the... (answered by checkley77)

A square and rectangle have equal area. The rectangle is 32 cm by 18 cm. What is the... (answered by solver91311)

If a square has a side equal to the perimeter of a rectangle with adjacent sides 4cm and... (answered by ewatrrr)

a square and a rectangle have equal perimeters. the rectangle is 64 cm by 82 cm what is... (answered by IBMath)

A sqaure and a rectangle have equal areas. if the rectangle is 36cm by 25cm, what is the... (answered by josgarithmetic)

A rectangle and a square have equal areas. The rectangle has a length of 9 and the width... (answered by KMST)

The length of a rectangle is 5cm, and its perimeter 14 cm. What is the area of the... (answered by stanbon)