Question

If the total length of the edges of a regular triangular prism(equilateral triangular-based prism) is 36 and the height is 6, find the surface area.

Answer 1

Answer:

hope you got answer

Step-by-step explanation:

Given: a=4cm and h=8cm; to find L.S.A and T.S.A

We know L.S.A=Ph=3×a×h=3×4×8=96cm

2

.

Further T.S.A=2B+Ph=2(

4

a

2

)+3ah=

2

3

4

2

+96≈(8×1.73)+96=109.84cm

2

.

Thus the total surface area is approximately 109.84cm

2

.