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2 years ago

Find volume. Use 3.14 to find the approximate volume. Enter your answer as a decimal in the box.

Mathematics

1 answer:

VLD [36.1K]2 years ago

8 0

Answer:

452.16 in³

Step-by-step explanation:

A volcano is an inverted cone and with that, the volume can be solved through the equation,

V = (1/3)(area of the base)(height)

We solve the area of the base first,

area of the base = (pi)(r²)

= 3.14(6 in)²

= 113.04 in²

Substituting these calculated values and the other givens above to the first equation,

V = (1/3)(113.04 in²)(12 in) = 452.16 in³

Thus, the volume of the model is approximately equal to 452.16 in³.

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A cylindrial hole is cut through the cylinder below.

Vika [28.1K]

Answer:

V=1884 Cubic mm

Step-by-step explanation:

We know that the volume of the Sphere is given by the formula

$V= \pi r^2h$

Where r is the radius and h is the height of the cylinder

We are asked to determine the radius of the hollow cylinder , which will be the difference of the solid cylinder and the cylinder being carved out.

$V=V_1-V_2$

$V=\pi r_1^2 \times h-\pi r_2^2 \times h$

$V=\pi \times h \times (r_1^2-r_2^2)$

Where

$V_1$ is the the volume of solid cylinder with radius $r_1$ and height h

$V_2$ is the volume of the cylinder being carved out with radius $r_2$ and height h

where

$r_1 = 7$ mm ( Half of the bigger diameter )

$r_2 = 5$ mm ( Half of the inner diameter )

$h=25$ mm

Putting these values in the formula for V we get

$V=\pi \times 25\times (7^2-5^2)$

$V=3.14 \times 25 \times(49-25)$

$V=3.14 \times 25 \times 24$

$V= 1884$

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denis-greek [22]

Answer:

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Step-by-step explanation:

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In Cary’s basketball career, he’s made 80% of his free throws, plus or minus 5%. If he attempts 200 free throws this season, wha

bogdanovich [222]

Answer: 150-170 free throws

Step-by-step explanation:

200 times 80% or .8 will give you 160

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Two times what equals twenty-two

forsale [732]

The are is eleven because 2×11= 22

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HELP! The total cost for the soil was $14. How much did it cost per square metre?

lakkis [162]

Answer:

Rate = $2.08

Step-by-step explanation:

Area × rate = cost

rate = cost / area

= 14/6.52

= $2.08

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2 years ago