Ethan's Surface Area post

<sup>Rectangular Prism


T = 5x10 = 50m2
F = 6x10 = 60m2
S = 5x6 = 30m2

TSA = 2 (T+F+S)
= 2 (50+60+30)
= 2 (140)
= 280m2
Triangular Prism</sup>

bxh
2
9x8
2
72
2
36 cm<sup>2

TSA = 40+45+50+36+36
= 207cm2
Cylinder</sup>


r= d
2

r= 8
2
r= 4

SA = (2x3.14x16)+(3.14+8+12)
=401.92 mm<sup>2

Volume

Cylinder</sup>

V= 3.14(6²x15)
V= 3.14(540)
V= 1695.6cm3

Triangular Prism 3\8 full


V= 4x8 x 6.5
2
V= 14x6.5
V= 91x0.375
V= 34.125cm3

Rectangular Prism


V= 20x8x16
V= 2560cm3

Triangular Prism


V= 5x3 x 8.5
2
V= 7.5x8.5
V= 63.75cm3