Answer:
1480cm³
Step-by-step explanation:
The Equation for the Volume of a Cylinder is V=Bh, where B is the area of the circle (A= πr²).
We are given all of the things we need, we just have to plug them into the equation.
First let's find B using the radius(r) which is given to be 6.4cm, so B=πr²
B=π(6.4cm)²
Plug that into a calculator to get 128.6796351cm²
Now we can plug that into the original equation, V=Bh.
V=(128.6796351cm²)h
h is also given to be 11.5cm, so lets plug that in.
V=(128.6796351cm²)(11.5cm)
You will get V=1479.815804cm³, but since we are rounding to the nearest cubic centimeter, we would round up to 1480cm³.
Outer Square perimeter minus inside perimeter equals outside square perimeter
Answer:
Below.
Step-by-step explanation:
The area = the height (h) times the base.
So Q2:
21 = h * 7
h = 21/7 = 3
55 = b * 5
b = 11.
18.75 = h * 7.5
h = 18.75 / 7.5
= 2.5.
