### Home > GC > Chapter 8 > Lesson 8.3.3 > Problem 8-107

8-107.

Use what you know about the area and circumference of circles to answer the questions below. Show all work. Leave answers in terms of

. Homework Help ✎If the radius of a circle is 14 units, what is its circumference? What is its area?

If a circle has diameter 10 units, what is its circumference? What is its area?

If a circle has circumference 100

units, what is its diameter? What is its radius?

Remember that the area of a circle is π*r*², while the circumference of a circle is 2π*r*.

Area = 196π

Circumference = 28π