Question

35 POINTS! PLEASE HELP MEEE!!! HURRY PLEASE IM RUNNING OUT OF TIME!!!!!!!!!!!!!!!!!

ALSO, THE MEASUREMENTS FOR THE LAST ONE IS 1.5m, 4m, 6m, 2.5m



Find the surface area of each figure to the nearest tenth show your work.

Answer 1

I've already done the first one for you, but here's the second one: (its in the attached sheet)

Answer 2

CYLINDER

Surface Area = 471.2 cm^2

TRIANGULAR PRISM

Surface Area = 60.75 m^2

Explanation:

CYLINDER

The surface area formula for a cylinder is π x diameter x (diameter / 2 + height), where (diameter / 2) is the radius of the base (d = 2 x r), so another way to write it is π x radius x 2 x (radius + height). ( π =3.14 )

FORMULA:

π x 5 x 2 x 15

WORK:

π x 5 = 15.7

15.7 x 2 = 31.4

31.4 x 15 = 471

TRIANGULAR PRISM

The surface area formula for a triangular prism is 2 * (height x base / 2) + length x width1 + length x width2 + length x base.

FORMULA:

2 x (2.5 x 1.5/2) + (6 x 4) + (6 x 4) + (6 x 1.5)

WORK:

(2.5 x 1.5) = 3.75/2 = 1.875

1.875 x 2 = 3.75

(6 x 4) = 24

(6 x 4) = 24

(6 x 1.5) = 9

3.75 + 24 + 24 + 9 = 60.75