Help with my year 10 Maths -.-

[!!!Liam!!!]

I rushed it because I wanted to go... anyway I need to find the area of them! Please tell me what to do <3

http://img281.imageshack.us/img281/9592/homework8rz.png

[Detox]

To find the semi circle in the square:

Area of circle = pi x r squared so 10 x pi squared and divided by 2. And divide it by 2 again because it is half a circle.


Area of the square:

Take away the area of the semi circle from 100 (Area of square = Length x Width = 10 x 10)


Ice Cream Shaped thing:
1) Semi circle: Pi x 8 sqaured and half it coz its half a circle again. Or Pi x 4 squared.
2) Triangle: Base x Height / 2. So 8 x 6 = 48 /2 = 24

Will try and do the rest in a minute.

[!!!Liam!!!]

I take it I will need a calculator :p brb <3

[Detox]

Yeah you need it for working out things with pi in.

[!!!Liam!!!]

I dont have the radious for the semi circle thingy majig :(

[!!!Liam!!!]

Uhmmm I will ring Jess later :P Ty <3

[Detox]

I dont have the radious for the semi circle thingy majig :(
The radius is half the diameter. The diameter is the width of the circle. You have the lengths you need to work it out. Good luck