the adjoining figure is the figure of two pillars
mounted a squared pyramid on the top. find the
total cost of tiling the pillars at the rate of
rs 52 per square feet.

Step-by-step explanation:

step 1

Find out the lateral area of the pillars

we know that

The lateral area of a rectangular prism is equal to

where

P is the perimeter of the base

H is the height of the prism

Determine the perimeter of the base

----> is a square base

The lateral area is equal to

Remember that the number of pillars is 2

so

step 2

Find the cost of tiling the pillars at the rate of  Rs 52 per square feet

Multiply the lateral area of the two pillars by the rate

so

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a