Louise mowed a neighbors yard to earn $25. she mowed a few more yards and earned an additional $75. she continued to mow all of the yards each week for a total of 5 weeks, earning money at the same rate. at the end of the 5 weeks, she spent $250 write a numerical expression with parentheses for the amount of money louise has left. (do not simplify your expression)

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Ответ:

xEmqq2034

26.07.2020

Mathematics

27Pi units squared

Step-by-step explanation:

step 1

Find the area of complete circle L

The area of circle is given by

$A=\pi r^{2}$

we have

$r=KL=ML=9\ units$

substitute

$A=\pi (9)^{2}$

$A=81\pi\ units^2$

step 2

Find the area of the shaded sector

we know that

The area of complete circle subtends a central angle of 360 degrees

using proportion

Find out the area of sector by a central angle of 120 degrees

$\frac{81\pi}{360^o}=\frac{x}{120^o}\\\\x=81\pi(120)/360\\\\x=27\pi\ units^2$

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