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3 years ago

8

Find the area of the figure shown. Use 3.14 to approximate pi

1 answer:

Nina [5.8K]3 years ago

4 0

Alrighty

we gots 1/4 circle and paralellogram

area circle=pi times radius^2
area paralelogram=base times height

1/4 circle is
radius is 10 so
area part circle is 1/4 times pi times 10^2=100/4pi=25pi=78.5 m²

area paralllogram is
10 times 3 because 3 is height and 10 is base length or 30

30+78.5=108.5 m² is the area

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Answer:

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Step-by-step explanation:

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2 years ago

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frosja888 [35]

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3 years ago

Read 2 more answers

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Answer:

1. $\frac{dy}{dt}=ky$

2.543.6

Step-by-step explanation:

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y(0)=200

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$\frac{dy}{dt}=ky$

Where k=Proportionality constant

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$lny=kt+C$

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Substitute the values then , we get

$ln 200=k(0)+C$

$C=ln 200$

Substitute the value of C then we get

$ln y=kt+ln 200$

$ln y-ln200=kt$

$ln\frac{y}{200}=kt$

$\frac{y}{200}=e^{kt}$

$y=200e^{kt}$

Differentiate w.r.t

$y'=200ke^{kt}$

Substitute the given condition then, we get

$100=200ke^{0}=200 \;because \;e^0=1$

$k=\frac{100}{200}=\frac{1}{2}$

$y=200e^{\frac{t}{2}}$

Substitute t=2

Then, we get $y=200e^{\frac{2}{2}}=200e$

$y=200(2.718)=543.6=543.6$

e=2.718

Hence, the number of bacteria after 2 hours=543.6

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