Area of a circle is pi x r^2
R is the radius which is have the diameter: r = 10/2 = 5
Area of the full circle would be 3.14 x 5^2 = 3.14 x 25 = 78.5 square units.
A semi circle is half a full circle
Area of the semi circle = 78.5/2 = 39.25 square units.
We are given this
write it as the difference of cubes
use the formula for the difference of cubes
Now use the formula for the difference of squares as 
Answer:
1,080 cm2
Step-by-step explanation:
you need to find the surface area...so
15x12=180
180x4=720
12x12=144
144x2=288
720+288=1008
Answer:
I'm not for sure about this one but if I did my math right it should be 68 sence it would be 48 if you didnt add 20
