Question

A circular playground for a daycare center is to be covered with 9" square tiles. The circle has a diameter of 12 ft. The tiles are packaged in boxes of 25 tiles. How many boxes of tiles are needed? http://usatestprep.com/modules/questions/qq.php?testid=557&assignment_id=581170&strand=2925&totalQuestions=10&condition=random#question

Answer 1

Can you find the area of the circle?

Answer 2

yes

Answer 3

So do that. Each tile is 81 square inches. So divide the area of the circle by 81 to see how many tiles are needed.

Answer 4

And watch the units. The circle has radius 6 feet which is 72 inches.

Answer 5

yea i got 113.04 as the area.

Answer 6

113.04 what?

Answer 7

A=3.14 multiplied by the radius squared. The radius is 72 inches.

Answer 8

i got the answer thank you.

Answer 9

yw