12. A garage is x metres wide. It is 5 metres longer than it is wide. The area of the garage
1 answer:
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Answer:
Part 1) The lateral area is
Part 2) The area of the two bases together is
Part 3) The surface area is
Step-by-step explanation:
Part 1) Find the lateral area
we know that
The lateral area of a prism is given by
where
P is the perimeter of the base
h is the height of the prism
so
----> perimeter of rectangle
---> given
substitute
Part 2) The area of the two bases together is?
The area of the rectangular base B is equal to
therefore
The area of the two bases together is
Part 3) The total surface area is
we know that
The surface area is equal to
substitute