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28.01.2021 •
Mathematics
Solve.
4×[52×(3×15)+32]-5=
Solved
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Ответ:
Step by step
= 4(52)(45)+32)−5
= 4(2340+32)−5
= (4)(2372)−5
= 9488–5
= 9483
Ответ:
a=63.62in²
step-by-step explanation:
if a circle has a diameter of 9 inches, the area of the circle is 63.62in².
formulas: a=πr2 and d=2r
a=1
4πd²=1
4·π·9²≈63.61725in²