The surface area of a square pyramid is found using the formula sa=b^2+2bh, where b is the length of the base and h is the height. the surface area of a square pyramid whose base is 3 feet long is 51ft^2 . what is the height of the pyramid, in feet? a. 0.85 b. 7.5 c. 24 d. 7

height of the pyramid is 7 feet.

surface area = B + 1/2

our equation will look like this do not mind the line at the end this'll be used in the final equation

51 ft² = 3ft^2 + 1/2 * 4 * 3ft * l

turn 3ft^2 into 9ft^2 then multiple 4 with 3ft then times with 1/2 this turns it into

51 ft^2 - 9 ft^2= 12ft/2 * l

42 ft² = 6 ft * I then we divide these two numbers 42 with 6 equaling 7ft!

so then what are you asking?

step-by-step explanation: