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Could I please get some help I give thanks. and this is worth 18 points!!


What is the surface area of a cylinder with a radius of 3 in. and a height of

4 in.? Use 3.14 for p. Show the equation you use as well as all of your work to solve.

Put each step of your work in a new line.

Could I please get some help I give thanks. and this is worth 18 points!! What is the surface area of a cylinder with a radius of 3 in. and a height of 4 in.? U class=

Verified Answer :

The formula for the surface area of a cylinder is A=2πrh+2πr².

A=2πrh+2πr²
  =2(3.14)(3)(4) + 2(3.14)(3)²
  =6.2834 + 6.289
  =75.36+56.52
  =131.88
The surface area of the cylinder is 131.88 in.²

As for the triangular prism, the formula is SA = wh + lw + lh + ls
w=width (2.7)
h=height (1.1)
l=length (4.2)
s=side

Since you don't know the side (which is the hypotenuse of the right triangle, use the Pythagorea formula a² + b² = c²

2.7² + 1.1² = c²(side)
7.29+1.21=8.5
The side is 8.5cm.
Now plug w, h, l, and s into SA = wh + lw + lh + ls

SA= (2.71.1)+(4.22.7)+(4.21.1)+(4.2*8.5)
SA= 2.97+11.34+4.62+35.7
SA=54.63
The surface area of the triangular prism is 54.63cm².

I hope I helped



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