Answer:
1648.5
Step-by-step explanation:
20cm radius - 10
50cm radius- 25
area = 3.14×10²
3.14×100
=314
area= 3.14× 25²
3.14×625
= 1962.5
1962.5
- 314
_________
1648.5
Answer:
Step-by-step explanation:
how many shapes of size A are in B ?
I counted 9.5
then just multiply the count * the size of A
got it?
we know that
The volume of a cylinder is equal to

where
r is the radius of the base
h is the height of the cylinder
In this problem

For 
<u>Find the value of h</u>


<u>Find the volume of the cylinder</u>


therefore
<u>the answer is</u>
The volume of a cylinder is equal to 
Answer:
-11/24
Step-by-step explanation:
5/12 - 7/8
We need to get a common denominator of 24
5/12 *2/2 - 7/8 *3/3
10/24 - 21/24
-11/24