A rectangular counter 3 feet wide and 5 feet long has a circle cut out of it in order to have a sink installed. The circle has a diameter of 18 inches. What is the approximate area of the remaining countertop surface? Use 3.14 for pi.

Question

anonymous · Answer

Counter top area - circle area = left over counter top area

(3*12)*(5*12) {for the counter in inches} - (18/2)^2 {aka radius squared} * 3.14

So 2160 for the counter top area - 254.34 for the circle

1905 in squared

anonymous · Answer

thanks, uhmm so then do i just figure out the square root of that??

anonymous · Answer

nope

Area is measure in inches * inches or in squared

if you want it in feet then you have to convert it back

to do that, you take your 1905 which is in inches * inches and divide it by 12 inches * inches or 144 inches squared because there are 144 inch^2 blocks in a 1 ft^2 block

So...

$$1905inches^2\div144inches^2/foot^2$$ = 13 ft^2

anonymous · Answer

ohh i see what your means...thanks for explaining.

anonymous · Answer

*you mean

anonymous · Answer

your welcome