Question

Find the circumference and area of a circle with the radius 3.5 feet. Use 22/7 for π.

Answer 1

Step-by-step explanation

Geometry / Circles / Parts of a Circle / Circumference and Area

The circumference and area of a circle with a radius r = 3.5 ft = 7/2 ft are:

`\begin{gathered} C=2\pi r=2\cdot((22)/(7))\cdot((7)/(2)ft)=22ft, \\ A=\pi r^2=((22)/(7))\cdot((7)/(2)ft)^2=(77)/(2)ft^2=38.5ft^2. \end{gathered}`Answer

• Circumference = 22 ft

,

• Area = 77/2 ft² = 38.5 ft²