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2 years ago

What is the diameter of a circle with a circumference of 37.68 inches? Use 3.14 for pi.

Mathematics

1 answer:

8_murik_8 [283]2 years ago

8 0

Answer: The diameter is 12.

Step-by-step explanation:

We know that the circumference can be found by the following formula:

C= Dπ or C= 2rπ I recommend using the one with the variable "D" , it is easier

Because we know that the circumference is 37.68 inches, we can substitute that for the variable "C" and solve for D, the diameter.

(37.68) = Dπ Divide by 3.14, as the instructions in this question specify to do so.

37.68/3.14 = D π/ 3.14

D = 12 The diameter equals twelve.

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2 years ago

Ivan wants to fill with foam the empty space left in a cube-shaped box after he places a basketball in the box. How many cubic i

Ann [662]

Answer:

280 cubic inches

Step-by-step explanation:

Cubic inches of foam required = volume of the box - volume of the basketball

The box has a shape of a cube, so that;

volume of the box = $l^{3}$

where l is the length of the sides of the box.

volume of the box = $9^{3}$

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volume of the box = 729 cubic inches

The basketball has the shape of a sphere, so that;

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2 years ago

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