HI PLS HELP ITS DUE AT 12 AND ITS 11:45 WILL MARK BRAINLIEST
1 answer:
<em>Answer:</em>
<em>Answer </em><u><em>= 3.14 * 40 = 125.6m^2</em></u>
<em>Step-by-step explanation:</em>
<em>Let R be the greater radius and r be the smaller radius
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<em>
</em>
<em>A) Area of the sidewalk = \pi R^2 - \pi r^2 - This can be the expression
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<em>
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<em>B) pi = 3.14 </em>
<em>= pi (R^2-r^2)
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<em>= pi (11^2-9^2)
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<em>= pi (121-81)
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<em>= pi *40
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<em>
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<em>That was the simplified expression
</em>
<em>Answer = 3.14 * 40 = 125.6m^2</em>
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Answer:
Step-by-step explanation:
11:30-9:30=2
so Danielle starts 2 hrs late.
let Danielle catches them after x hrs.
x×60=(x+2)×20
divide by 20
3x=x+2
3x-x=2
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x=1
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