A triangular pyramid has a base shaped like an equilateral triangle. The legs of the equilateral triangle are all 5 inches long, and the height of the equilateral triangle is 4.3 inches. The pyramid's slant height is 5 inches. What is its surface area?

Question

please help me solve

Answer 1

Impatient much?
Your posts (first one now removed) are only 6 minutes apart, remember all tutors here are volunteers and
most of us are on only occasionally during a day.

anyway....
It sound like your pyramid is a tetrahedron, that is, it is made from 4 equilateral triangles
So the surface area would simply be 4 times the area of an equilateral triangle with sides 5
Area of one of them = (1/2)(5)(4.3)
= ...

Now multiply that by 4

Answer 2

A rectangular pyramid has a base that is 4 inches long and 4 inches wide. The pyramid's slant height is 4 inches. What is its surface area?

Answer 3

A triangular pyramid has a base shaped like an equilateral triangle. The legs of the equilateral triangle are all 13 meters long, and the height of the equilateral triangle is 11.3 meters. The pyramid's slant height is 20 meters. What is its surface area?