What is the sum of 18−4^2+5⋅2
2 answers:
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Answer:
Step-by-step explanation:
The volume of the pyramid is given by:
where is the area of the base and
is the height.
We know that the height is:
Thus we need to find the area of the square at the base.
The perimeter of the square is:
this means that the length of the sides of the square is :
Now we can find the area of the base which the area of the square:
and finally we find the volume:
Which rounded to the nearest tenth of a cubic centimeter is: