Achurch spire in a form of a regular hexagonal pyramid whose base edge is 8ft and whose altitude is 75ft is to be painted at a cost of 22 dollars per sq. yard. what is the total cost?

The total cost is $4825.19.

Explanation:

Given information:

Base edge = 8 ft

Height = 75 ft

The surface area of a regular hexagonal pyramid is

where, a is base edge and h is height.

Substitute a=8 and h=75 in the above formula.

The area of regular hexagonal pyramid is 1973.94 sq. ft.

We know that

1 sq. yard = 9 sq. ft

The area of regular hexagonal pyramid in square yard is

It is given that cost of paint is 22 dollars per sq. yard. So, total cost is

Therefore the total cost is $4825.19.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

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