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eimsori [14]
3 years ago
5

HI PLS HELP ITS DUE AT 12 AND ITS 11:45 WILL MARK BRAINLIEST

Mathematics
1 answer:
OlgaM077 [116]3 years ago
3 0

<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 </em>

<em> </em>

<em>A) Area of the sidewalk =  \pi R^2 -  \pi r^2   - This can be the expression </em>

<em> </em>

<em>B)  pi  = 3.14  </em>

<em>= pi (R^2-r^2) </em>

<em>= pi (11^2-9^2) </em>

<em>= pi (121-81) </em>

<em>= pi *40 </em>

<em> </em>

<em>That was the simplified expression </em>

<em>Answer = 3.14 * 40 = 125.6m^2</em>

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