If the number ends with an even number or a number that is always divisible by 2. Or every number that ends with 5 or zero is always divisible by 5 too. Bdause for example in a fraction we do 10/5 and it will be equal to 2/1 or 2. Hope it helped you!

7 0

3 years ago

The surface area of a ball is 3,600 square millimeters. What is the balls radius

allsm [11]

$A = 4 \pi r^2$

$3600 = 4\pi r^2$

$\dfrac{3600}{4 \pi} = r^2$

$r^2 = 286.479$

$r = 16.9$

Answer: The radius is 16.9 mm.

4 0

3 years ago

Emichee can you help me? A cylinder has a base with a radius of 8 inches and a height of 15 inches. What is the volume of the cy

Lina20 [59]

The volume of a Cylinder is:

$V=A_b*h$

the base is a circle, so

$A_b=\pi*r^2$

replacing

$V=\pi*r^2*h$

now we have the values

$V=3.14*8^2*15$

$\boxed{\boxed{V=3014.4~in^3}}$

7 0

3 years ago