Ah, volume!
1) Use the formula of rectangular prism: width x height x length
2) Use the formula of triangular prism: (Base x height x length) ÷ 2
3) Use the formula of cylinder: π x [tex]radius^{2}[/tex] x height
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1)
- width = 5 cm
- height = 9 cm
- length = 23 cm
width x height x length
= 5 x 9 x 23
= 1035
answer: 1035 cubic centimeters
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2)
- Base = 5 in
- height = 4 in
- length = 20 in
(Base x height x length) ÷ 2
= (5 x 4 x 20) ÷ 2
= 400 ÷ 2
= 200
answer: 200 cubic inches
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3)
- radius = 5/2 = 2.5 m
- height = 12 m
π x [tex]radius^{2}[/tex] x height
= π x [tex]2.5^{2}[/tex] x 12
= π x 6.25 x 12
= 75π
= 236 (rounded to neareast whole number)
answer: 236 cubic meters
