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C. Supply the missing data. Give answers to the nearest tenth of the unit
used.
1. Cylinders
a. r = 12 cm h = 20 cm V =?
2. Cones
a. r = 8 cm h = 12 cm V =?
3. Pyramids
a. l = 30 cm w = 20 cm h = 25 cm V =?
4. Spheres
a. r = 12 dm V = dm3
5. Prisms
a. square base; s = 6.5 cm h = 8 cm V =?
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Verified answer
Step-by-step explanation:
1. Formula: V = πr²h
Substitute
V = (3.14)(12cm)²(20cm)
V = 9,043.2 cm³
2. Formula: V = 1/3 πr²h
Substitute
V = 1/3(3.14)(8cm)²(12cm)
V = 803.84 cm³
3. Formula: V = 1/3Bh where B = lw
Substitute
V = 1/3(30cm)(20cm)(25cm)
V = 5,000 cm³
4. Formula: V = 4/3 πr³
Substitute
V = 4/3(3.14)(12dm)³
V = 7,234.56 dm³
5. Formula: V = s²h
Substitute
V = (6.5cm)²(8cm)
V = 338 cm³