Homework Help


QFind the percent increase in the area of a circular pizza if the radius is increased from nine inches to ten inches

Find the percent increase in the area of a circular pizza if the radius is increased from nine inches to ten inches.

4 answers

This question still have no answer summary yet.
#1JoeAnswered at 2012-12-19 06:38:46
A=r^2*pi

(10^2*pi)/(9^2*pi)=100/81=1.23456790123

1.23456790123*100%=123.456790123%

123.456790123%-100%=23.456790123%

increse=23.456790123%
#2reeAnswered at 2013-01-13 05:47:35
area of 9" pizza = 81π
area of 10" pizza = 100π
increase = 19π
percentage increase = 19π/(100π)(100%) = 19%
#3Yentrouc AKA CourtAnswered at 2013-01-28 12:41:30
I should have taken 19π/(81π) for a 23.5% increase
as 'anonymous" and Ms Sue did

sorry about that.
Time to get a strong coffee.
#4anjanAnswered at 2013-02-14 02:37:13
A = pi * r^2
A = 3.14 * 81
A = 254.34 sq. inches

Find the area of the larger pizza.

Divide the difference by the area of the smaller pizza.
Anonymous Sign In Sign Up
Add Answer of
Find the percent increase in the area of a circular pizza if the radius is increased from nine inches to ten inches

Did this answer your question? If not, ask a new question.

Related Answers