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45 votes
MODELING REAL LIFE A softball has a volume of about 29 cubic inches. Find the radius of the softball. Round your answer to the nearest tenth.

The radius of the softball is about___inches.

User Vaettchen
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2 Answers

9 votes
9 votes

the equation for volume is V=4/3 * pi * radius cubed.

Since we know 29 is the volume, the equation is 29=4/3 * pi * radius cubed.

To get the radius alone, first divide 29 by 4/3. You get 21 3/4 or 87/4 or 21.75 (whichever way).

Then divide 21.75 by pi (3.14). You get 6.92675159236

To get the radius alone, find the cubed root of 6.92675159236.

The answer is 1.90623543217, but I'd rounded to 1.91

User Booshong
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3.2k points
19 votes
19 votes

Answer: 1.91

Step-by-step explanation: the equation for volume is V=4/3 * pi * radius cubed.

Since we know 29 is the volume, the equation is 29=4/3 * pi * radius cubed.

To get the radius alone, first, divide 29 by 4/3. You get 21 3/4 or 87/4 or 21.75 (whichever way).

Then divide 21.75 by pi (3.14). You get 6.92675159236

To get the radius alone, find the cubed root of 6.92675159236.

The answer is 1.90623543217, but I rounded it to 1.91

User Gopelkujo
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3.1k points