Question

what is the lateral surface area of an equilateral triangle ​

Answer 1

Step-by-step explanation:

An equilateral triangle pyramid has 4 faces (including the base), each an equilateral triangle. If the lateral surface area (it does not include the base) is 540 sq cm, each of the three faces have an area of 540/3 = 180 sq cm. Hence the sides of the triangle = 180 = a^2*(3^0.5)/4, where a is the side