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makvit [3.9K]
3 years ago
6

Twenty percent of the students at Drew's school walk to school. There are 300 students in Drew's school. How many students walk

to school?
Mathematics
2 answers:
swat323 years ago
7 0

20% of 300 equals 60

Radda [10]3 years ago
6 0

step 1: write the percent s a fraction

20%=20 for every  100 = 20/100

step 2: write an equation of two equivalent ratios

the first ratio is given percent written as a fraction: 20/100

the second ratio is the number of students who walk to the total number of students at drews school. the number of students who walk is unknown. the total number is 300

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Please help ASAP! Thanks! For the figures below, assume they are made of semicircles, quarter circles and squares. For each shap
bazaltina [42]

Answer:

Part 1) A=36(\pi-2)\ cm^2

Part 2) P=6(\pi+2\sqrt{2})\ cm

Step-by-step explanation:

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A=\frac{1}{4}\pi r^{2}-\frac{1}{2}(b)(h)

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substitute

A=\frac{1}{4}\pi (12)^{2}-\frac{1}{2}(12)(12)

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simplify

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Part 2) Find the perimeter

The perimeter of the figure is equal to the circumference of a quarter of circle plus the hypotenuse of the right triangle

<em>The circumference of a quarter of circle is equal to</em>

C=\frac{1}{4}(2\pi r)=\frac{1}{2}\pi r

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The hypotenuse of right triangle is equal to (applying the Pythagorean Theorem)

AC=\sqrt{12^2+12^2}

AC=\sqrt{288}\ cm

simplify

AC=12\sqrt{2}\ cm

Find the perimeter

P=(6\pi+12\sqrt{2})\ cm

simplify

Factor 6

P=6(\pi+2\sqrt{2})\ cm

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