Question

The area of the heart is 20 cm(squared). If this is 72% of the area of the square, what is the area of the square?

Answer 1

So 20=72%
percent means parts out of 100
72%=72/100
20=72/100 of area of square
area of square =x
20=72/100 times x
solve for x
multiply both sides by 100/72 to clear fraction
27 and 7/9=x

the area=27 and 7/9 square cm or cm^2

Answer 2

Ratio and proportion 20 cm/72%= x cm / 100% cross multiply 72 x= 20000 x= 27.78 A= 27.78 cm^2 hope this helps