Answer:
c. $660
Step-by-step explanation:
The area of the arc can be computed as the product of the length of its centerline and its width. The centerline has a radius of 5.25 ft (= (4+6.5)/2) and subtends an angle of 72π/180 radians. Thus, the area is ...
(72π/180)·(5.25 ft)·(2.5 ft)
This is multiplied by the cost per square foot to get the total cost. The calculation and its result are shown in the attachment.
The cost is about $660.
Answer:
Option B. The volume is the product of the area of the base, 2x(2x + 5), and the height, 2x – 3
Step-by-step explanation:
<u><em>The picture of the question in the attached figure</em></u>
we know that
The volume of a rectangular prism is equal to
where
B is the area of the base of the prism
H is the height of the prism
In this problem we have
The area of the base B is equal to
The height H is equal to
therefore
The volume is equal to
The volume is the product of the area of the base, 2x(2x + 5), and the height, 2x – 3
