samchix9062
22.08.2020 •
Mathematics
A cylinder is a radius of 8cm and a volume of 800cm³ calculate it's height and total surface area
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Ответ:
3.98 cm, 602.18 cm²
Step-by-step explanation:
Given:
r= 8 cmV= 800 cm³To find:
h = ?S = ?Solution:
V = πr²hh = V/πr² = 800/(π8²) = 3.98 cmS = 2πr (r+h) = 16π(8+3.98) = 602.18 cm²Ответ:
490*x + 700*y > 4000
It is < as it can be equal to 4000 per week or less than.