1. 65.4167 in^3
Explanation:
Change 2 1/2 into decimal. It is 2.5.
2.5 x 2.5 x 2.5 = 15.625
15.625 x 4 = 62.5
62.5 divided by 3 = 20.833333
20.833333 (infinity) x 3.14 = 65.4167 (rounded off)
2. 471 cm^3
Change 12 1/2 into decimal. It is 12.5.
The radius is 6 cm and the height is 12.5.
6 x 6 = 36
36 x 12.5 = 450
450 divided by 3 = 150
150 x 3.14 = 471
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Answers & Comments
1. 65.4167 in^3
Explanation:
Change 2 1/2 into decimal. It is 2.5.
2.5 x 2.5 x 2.5 = 15.625
15.625 x 4 = 62.5
62.5 divided by 3 = 20.833333
20.833333 (infinity) x 3.14 = 65.4167 (rounded off)
2. 471 cm^3
Explanation:
Change 12 1/2 into decimal. It is 12.5.
The radius is 6 cm and the height is 12.5.
6 x 6 = 36
36 x 12.5 = 450
450 divided by 3 = 150
150 x 3.14 = 471