Krystal's Growing Post

RECTANGULAR PRISM
TOP;FRONT;SIDE

Area =LxW Area=LxW Area=LxW
Area = 5x8 Area=8x8 Area=8x8 Area =40cm2 Area=64cm2 Area=64cm2

TSA= TOP + TOP + FRONT + FRONT + SIDE + SIDE
= 40+40+64+64+64+64
= 208 cm2



























TRIANGULAR PRISM

a = b x h ÷ 2

a = 10 x 12 ÷ 2

a = 60cm²

a = l x w

a = 10 x 4

a = 40cm²

a= l x w

a = 10 x 4

a = 40cm²

a= l x w

a= 10x 12

a = 60cm²

TSA

= (triangle)+(triangle)+(rectangle)+(rectangle)+(rectangle)
= 60+60+60+40+40

= 260cm²

Cylinder
Radius:

r = d ÷ 2

r = 12 ÷ 2

r = 6cm²

Formula:

sa = 2 x (pi x r²) + (pi x d x h)

sa = 2 x 3.14 x 6 x 6 + 3.14 x 6 x 12

sa = 226.08+ 226.08

sa = 452.16 cm²