Question

If the volume for 3-D polyhedra A is 300 cm3 and the volume for 3-D polyhedral B is 900 cm3. How many times bigger is the volume of pyramid B than pyramid A?

Select one:
a. 3%
b. 30%
c. 300%
d. 3000%

Answer 1

Hello Marie,

V(B)/V(A)=900/300=3=300/100=300%

Answer 2

c. 300%

Explanation:

In order to solve this problem you just have to divide the bigger polyhedral by the smaller polyhedral:

`(900 cm^(3) )/(300cm^(3))`

As this is equal to 3, you know that the bigger polyhedral is 3 times bigger than the smaller polyhedral so now you just make a rule of three, if an object that is 100% bigger than other is 1 time bigger, what would be the percentage of an object that is 3 times bigger?

`(1)/(100)=(3)/(x)`

Once you clear the X the equation would look like this:

`x=(3*100)/(1)`

`x=300`