227k views
2 votes
What is the area of the shaded region?

What is the area of the shaded region?-example-1

2 Answers

2 votes

Answer:

125.76 cm²

Explanation:

A quick way to do this is to take the radius of the larger circle, R, and then take the radius of the smaller circle, r, and find the difference between the two areas:


\pi(R^2-r^2)=\pi(7^2-3^2)=\pi(49-9)=40\pi

Therefore, the area of the shaded region is 40π cm², or about 125.76 cm².

User Ian Sudbery
by
8.3k points
2 votes

Answer:

125.66 cm²

Explanation:

area of larger circle = π r²

= π (7)²

= 49π

area of smaller circle = π r²

= π (3)²

= 9π

area of shaded region = 49π - 9π

= 40π

= 125.66 cm² to nearest one hundredth

User Aksoy
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.