Question

Fan + Medal
Click link below to help!
http://gyazo.com/d28274384598b5b359c54ff58b1e038c

Answer 1

first find the radius of the semicircle wish is 1/2 of the diameter

then use this value to find the area
formula for the area = 1/2 * 3.14 * radius

Answer 2

what do you get?

Answer 3

So 21/2

Answer 4

10.5

Answer 5

right that's the radius
now you need to put radius = 10.5 into the formula for area and work it out

Answer 6

How :/

Answer 7

.-. Really he just leaves..

Answer 8

Well we've worked out that the radius ( r ) = 10.5 right? :)
So since we are trying to work out the area of the patio, we need to use the area of a circle formula:

(note- we only need to find out what 1/2 the area of the circle is because the patio is a semi-circle and not a full circle )