Nerdymania
20.05.2020 •
Mathematics
Determine, to the nearest tenth, the surface area of a tin can with a radius of 10 centimeters and a height of 12 centimeters.
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Ответ:
1382.3 cm²
Step-by-step explanation:
We'll assume that we have to find the total surface area, including the areas of the ends.
The area of the side is given by A = 2πr·h and that of each of the ends by A = πr².
Thus, the side area is A = 2π·(10 cm)·(12 cm) = 240π cm² ≅ 754.0 cm²
and double the area of the base is A = 2·π·(10 cm)² = 628.3 cm²
and so the total surface area of the can (including the ends) is 1382.3 cm²
Ответ:
4
Step-by-step explanation: