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2 years ago

Please help!! I need to know this by today

Mathematics

2 answers:

DiKsa [7]2 years ago

6 0

The answer is 94.2 cm. multiply 3.14*10*6 divide 2.

liraira [26]2 years ago

6 0

So to find out the surface area of the bottom of the pencil holder, we can use the formula for the area of a circle.

A(bottom)=πr²
plug in the data we know
A(bottom)=π6²
A(bottom)=π*36
A(bottom)=36π cm²

For the surface area of the side, we need to find out the circumference of the bottom circle and then multiply that by the height.

A(side)=C*h

C=πd
C=π12
C=12π

A(side)=12π*10
A(side)=120π cm²

Total surface area=36π+120π=156π or 490.09cm²

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3 years ago

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2 years ago

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