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nahannahawkins8888
13.05.2020 •
Mathematics
What is the radius of a hemisphere with a volume of 8231 cm3
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Ответ:
radiusr = 15.7808841 cm
Step-by-step explanation:
base circumferenceC = 99.1542189 cm
volumeV = 8231 cm³
curved surface areaA = 1564.74123 cm
base surface areaB = 782.370617 cm²
total surface areaK = 2347.11185 cm²
In Terms of Pi π
base circumferenceC = 31.5617681 π cm
volumeV = 2620.00867 π cm³
curved surface areaA = 498.072604 π cm²
base surface areaB = 249.036302 π cm²
total surface areaK = 747.108906 π cm²
Hemisphere Formulas in terms of radius r:
Volume of a hemisphere:
V = (2/3)πr³
Circumference of the base of a hemisphere:
C = 2πr
Curved surface area of a hemisphere (1 side, external only):
A = 2πr²
Calculate the base surface area of a hemisphere (a circle):
B = πr²
Total surface area of a hemisphere:
K = (2πr²) + (πr²) = 3πr²
Ответ: