Middle School

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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.

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

Answer :

Answer:

CYLINDER

Surface Area = 471.2 cm^2

TRIANGULAR PRISM

Surface Area = 60.75 m^2

Step-by-step 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

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Rewritten by : Barada

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