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marissa [1.9K]
3 years ago
7

PLS HELP ME.

Mathematics
1 answer:
yarga [219]3 years ago
7 0

Answer:

15092cm^3

Step-by-step explanation:

The total thickness of the strip of metal sheet  would be 2*10=20cm

the new radius of the cylinder would be 9/2+20=24.5cm

Volume of a cylinder: ((pi)r^2)h

the height is 8cm

Volume : (22/7)*24.5^2*8

=15092cm^3

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C

Step-by-step explanation:

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3 years ago
Need help quick simplify the expression (-4) power of 3
dezoksy [38]

Answer:

-64

Step-by-step explanation:

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Notice how the -4 is in parenthesis. This means that along with the 4 being multiplied, the negative is too.

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First let's figure out if this will be negative or positive

Whenever the exponent is odd and there is a negative in the parenthesis the answer will be negative and if its even it will be positive

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3 years ago
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kirza4 [7]

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Step-by-step explanation:

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3 0
3 years ago
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2 years ago
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