How do you find the circumference and area of a circle with radius of 7 feet?

2 Answers
Mar 18, 2018

The formula for area is #pi xx r^2# and the circumference is #2 xx pi xx r#

So if #r=7#, let's find these values:

#* * * * * * * * * * * * * * * * * * #

Area

#pi xx 7^2#

#pi xx 49#

#49pi# feet

#* * * * * * * * * * * * * * * * * * #
Circumference

#2 xx pi xx 7#

#14pi# feet

Mar 18, 2018

Answer:

Use these formulae

Explanation:

The circumference of a circle is #pi d#

The area of a circle is #pi r^2#

Remember that the diameter is double the radius