3 years ago

Area of a circle

Mathematics

1 answer:

Nutka1998 [239]3 years ago

7 0

Answer:

49 pie

Step-by-step explanation:

Area of a circle is pie(radius squared)

radius is half diameter

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124 7/8 gallons of water drained from a pool in 25 minutes how much water drained from pool each minute

boyakko [2]

first off, let's convert the mixed fraction to "improper", and then check,

$\bf \stackrel{mixed}{124\frac{7}{8}}\implies \cfrac{124\cdot 8+7}{8}\implies \stackrel{improper}{\cfrac{999}{8}}\\\\ -------------------------------\\\\ \begin{array}{ccll} \stackrel{water}{gallons}&minutes\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ \frac{999}{8}&25\\\\ x&1 \end{array}\implies \cfrac{\quad \frac{999}{8}\quad }{x}=\cfrac{25}{1}\implies \cfrac{\quad \frac{999}{8}\quad }{\frac{x}{1}}=25$

$\bf \cfrac{999}{8}\cdot \cfrac{1}{x}=25\implies \cfrac{999}{8x}=25\implies 999=200x \\\\\\ \cfrac{999}{200}=x\implies \stackrel{gallons}{4\frac{199}{200}}=x$