MEDAL AND FAN!!!

The area of the base of a prism is 21 cm2. The perimeter of the base is 20 cm. The height of the prism is 8 cm.

What is the surface area of the prism?

cm2

Question

MEDAL AND FAN!!!



The area of the base of a prism is 21 cm2. The perimeter of the base is 20 cm. The height of the prism is 8 cm.
 
What is the surface area of the prism?
 
  cm2

anonymous · Answer

Allright. A prism is a 3 faced structure made of equilateral triangles

anonymous · Answer

yes

anonymous · Answer

let one side be x. 
the perimiter of the base, 3x = 20

ilovewolf · Answer

|dw:1424272839351:dw|

anonymous · Answer

Wait a minute there's something wrong about the solution . Hang on there.

anonymous · Answer

ok

anonymous · Answer

The surface area of a prism = 2 × area of base  +  perimeter of base × H

anonymous · Answer

Im so sorry for the earlier mess up. Here, the question is based on the formula mentioned above.

anonymous · Answer

Put in the values, n there's your answer :')

anonymous · Answer

so its 2?

anonymous · Answer

@iGreen.

anonymous · Answer

can  you help me plz