Area of Circles

Multiple Choice

Select the correct formula for finding area of a circle

• $$2\pi r$$  

• $$\pi r^2$$  

• $$\pi d$$  

• l x w

Multiple Choice

Find the area.

• $$6.28km^2$$  

• $$18.84yd^2$$  

• $$3.14yd^2$$  

• $$12.56km^2$$  

Multiple Choice

Find the area.

• $$28.26cm^2$$  

• $$113.04cm^2$$  

• $$12.56cm^2$$  

• $$3.14cm^2$$  

Multiple Choice

Find the area in terms of  $$\pi$$  

• $$30\pi yd^2$$  

• $$15\pi yd^2$$  

• $$20\pi yd^2$$  

• $$225\pi yd^2$$  

Multiple Choice

Find the area in terms of  $$\pi$$  

• $$10\pi in^2$$  

• $$5\pi in^2$$  

• $$100\pi in^2$$  

• $$25\pi in^2$$  

Composite Figures

Composite figures are figures that are made from more than one shape being combined. The heart that you see is actually made from a square and two semi-circles.

To calculate composite figures' area, you need to be able to find the area of simple shapes first.

Let's practice!