If the area of a circle is found using A=πr2, find r if the area is 25in2 and using pi equals 3.14Please help
Mathematics · High School · Thu Feb 04 2021
llm
Answered on
GIven:
Area of the circle = 25 in^2
Find for r.
Formula for the Area of the Circle:
A=πr^2
r = ( A/π )^½
Solution:
In order to find for r, we simply need to substitute the value of A to the formula for r, in terms of A.
r = ( A/π )^½
r = ( 25 in^2/π )^½
r = (7.96 in^2)^½
r = 2.82 in
Final answer:
r = 2.82 in