Register
The radius of a circle is 21 cm, what is the area?​
215k views
3 votes
The radius of a circle is 21 cm, what is the area?​

User Bleeeah
by
6.4k points

1 Answer

4 votes

Answer:

A ≈ 1385.4 cm²

Explanation:

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

= π × 21²

= π × 441

= 441π cm²

≈ 1385.4 cm² ( to 1 dec. place )

User Loourr
by
7.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.6m questions

10.1m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!