Answer:
Part 18) Option D 100 square meters
Part 19) Option A 60 cubic meters
Part 19) Option C. 212 cubic centimeters
Step-by-step explanation:
Part 18) Estimate the surface area of the prism
we know that
The surface area of the prism is equal to
where
B is the area of the base
P is the perimeter of the base
H is the height of the prism
<em>Find the area of the base B</em>
<em>Find the perimeter of the base P</em>
we have
substitute
----> exact value
<u><em>Estimate the surface area</em></u>
we have
----> round up
----> round down
<em>Estimate the area of the base B</em>
<em>Estimate the perimeter of the base P</em>
substitute in the formula
Part 19) Estimate the volume of the prism
The volume of the prism is equal to
we have
substitute
----> exact value
<u><em>Estimate the volume</em></u>
we have
----> round up
----> round down
<em>Estimate the area of the base B</em>
substitute in the formula
Part 20) The volume of the prism is equal to
we have
substitute
----> exact value
<u><em>Estimate the volume</em></u>
we have
----> round up
----> round down
<em>Estimate the area of the base B</em>
substitute in the formula