Find the surface area of a prism with bases which are equilateral triangles of side length 4 cm and a height of 5 cm.

Question

raden · Answer

surface area = base area + (perimeter of base * the height of that prism)

jhonyy9 · Answer

try drawing it

jhonyy9 · Answer

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jhonyy9 · Answer

area of base can you calculing ?

jhonyy9 · Answer

what is formula for area of a triangle ?

jhonyy9 · Answer

are you here ?

anonymous · Answer

A=1/2bh the area of the base of the prism is 6.93

jhonyy9 · Answer

ok
and area of a lateral side =?

jhonyy9 · Answer

but can rewriting here how you have got 6,93 for area of base ?

anonymous · Answer

the base of the prism is a triangle so I used the formula h=$$(\sqrt{3}*s)/2$$
s being 4 and the answer I came up with for the height was 3.46 and then i plugged that in to the equation i used to find the area of the base

jhonyy9 · Answer

ok

than now you ned to calculi arae of a lateral side = ?

jhonyy9 · Answer

or us formula what have wrote firstly @RadEn

anonymous · Answer

ok if i use @RadEn's formula my answer is 66.92

jhonyy9 · Answer

write please here your calculi

anonymous · Answer

6.92+(12*5)
=6.92+60
=66.92

jhonyy9 · Answer

ok do you understand it now sure right ?

anonymous · Answer

yes, thank you!

jhonyy9 · Answer

yw

good luck

bye