Net:

A = L x W

A = 15 x 4

A = 60 cm2

A = L x W

A = 4 x 2

A = 8 cm2

A = L x W

A = 15 x 2

A = 30 cm2

TSA = 60 + 60 + 8 + 8 + 30 + 30

= 196 cm2

Triangular Prism

Net:

A = B x H /2

A = 12 x 5

A = 60 cm2

A = L x W

A = 15 x 3

A = 45 cm2

A = L x W

A = 5 x 3

A = 15 cm2

A = L x W

A = 12 x 3

A = 36 cm 2

TSA = 36 + 36 + 45 + 15 + 60

= 192 cm 2

Cylinder

Net:

**Radius:**

R = D/2

R = 9/2

R = 4.5cm2

Circumference:

C= Pi x D

C= 3.14 x 9

C= 28.26

Area:

A= Pi x R x R

A= 3.14 x 4.5 x 4.5

A= 63.585

L x W = Area

63.585 x 63.585 = Area

127.17 cm2 = Area

Total Surface Area:

TSA=Circle+Circle+Rectangle

=63.585+63.585+127.17

= 254.34 cm2

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