A square pyramid has a base side length of 8 feet. The height of each lateral face is 7 feet. What is the surface area of the pyramid?

176 sq ft

Step-by-step explanation:

The height of each lateral face is the slant height of the pyramid.

LA =  1/2(PL) where P is the perimeter of the base and L is the slant height.

SA = surface area    B = area of base   LA = lateral area

SA = B + LA = B + 1/2(PL)

P = 4(8) = 32       B = (8)(8) = 64     L = 7

SA = 64 + 1/2(32)7

SA = 8(8) + 1/2(32)(7)

     = 64 + 112

     = 176 sq ft.

$3,200 x 7.25% = $3,200 x .0725 = $232 interest monthly

$232 monthly x 12 annual = $2, 784

step-by-step explanation: