If r=8 and h=4, what is the volume of the cylinder shown above
1 answer:
Lets get started :)
The Volume formula of a Cylinder is
V =
r²h
(r = radius, h = height)
The radius given is 8 and the height is 4, We can plug in the known values
V =(8)²(4)
=256
= 256 units³ (You can leave the answer in this form)
≈ 804.2 units³ (approximately)
Units³ because it is a volume (3D shape)
The Volume formula of a Cylinder is
V =
(r = radius, h = height)
The radius given is 8 and the height is 4, We can plug in the known values
V =
=
= 256
≈ 804.2 units³ (approximately)
Units³ because it is a volume (3D shape)
You might be interested in
Let be the 20 marks of the boys, and
be the 10 marks of the girls.
We know that the global mean was 70, meaning that
Multiplying both sides by 30 we deduce that the sum of the scores of the whole classroom is
By the same logic, we work with the marks of the boys alone: we know the average:
And we deduce the sum of the marks for the boys:
Which implies that the sum of the marks of the girls is
And finally, the mean for the girls alone is