A pyramid has a square base with area 225 square centimeters. It has four faces that are congruent isosceles triangles. The heig

Question

4 years ago

9

ht of each triangle is 12 centimeters. Find the surface area of the pyramid.

1 answer:

aleksley [76] · Answer 1 · 2021-12-04T03:19:33+03:00

We know that total surface area is the area of of the base + area of all the walls + area of the top

here we are working with a pyramid whose base is a square but the wall are four triangles

as triangles are connected on the top , there would be no top area ( as the top would be a point ( where all four triangles are being join )

so total area is = area of base + area of four walls ( triangles here )