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Vinvika [58]
2 years ago
5

Please help with all 3

Mathematics
2 answers:
DerKrebs [107]2 years ago
8 0

Answer:

1, volume=23×9×5

=1035

2, volume=(1/2×5×4)×20

... =200

3.

Vlad [161]2 years ago
6 0
<h2>Ah, volume! </h2>

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 radius^{2} x height

--------------------------------------------------------------------------------------------------

1)

  • width = 5 cm
  • height = 9 cm
  • length = 23 cm

width x height x length

= 5 x 9 x 23

= 1035

<h2>answer: 1035 cubic centimeters</h2>

------------------------------------------------------------------------------------------------

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

<h2>answer: 200 cubic inches</h2>

------------------------------------------------------------------------------------------------

3)

  • radius = 5/2 = 2.5 m
  • height = 12 m

π x radius^{2} x height

= π x 2.5^{2} x 12

= π x 6.25 x 12

= 75π

= 236 (rounded to neareast whole number)

<h2>answer: 236 cubic meters</h2>
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