5.5k views
25 votes
5. Find the area.
What do I do

5. Find the area. What do I do-example-1

2 Answers

9 votes

Answer:

508.68cm^2

Explanation:

this is a semicircle, so first get the whole circle by s=


\pi \: r {}^(2)

so it said you should plug in 3.14 for pi,

3.14×18^2=1017.36

and semicircle should be the half of it, which is 508.68 cm^2

User Tls Chris
by
8.3k points
9 votes

Answer:

127.17 cm²

Explanation:

The area of a circle of radius r is given the the formula below.

A = πr²

Since you have a semicircle, divide the area of a circle by 2.

A[semicircle] = πr²/2

A[semicircle] = 3.14 × (9 cm)² / 2 = 127.17 cm²

Answer: 127.17 cm²

You are correct. Remember to include the units. In this case, it is cm².

User Moud
by
8.1k points

No related questions found

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

9.4m questions

12.2m answers

Categories