If one-half of a number decreased by 20 is 40, what is the number?
2 answers:
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Answer:
2). Volume = 14400 feet³
3). Volume = 157.5 ft³
Step-by-step explanation:
Both the figures given in the sheet attached are a rectangular pyramid and a triangular prism.
2). In this part of the question solid given is in the shape of an rectangular pyramid.
Volume of this oblique pyramid =
Here 'B' = area of the base
h = height of the pyramid
Volume =
= 14400 cubic feet
4). Volume of a triangular cone = (Area of the triangular base)×(height)
=
=
= 157.5 ft³