The radius of a circular board is 3.5 meters. If the cost of paint is $4/m squared, estimate the cost of painting the board

Lee Kowalkowski asked Sep 25, 2022

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Lee Kowalkowski asked Sep 25, 2022

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7 votes

Answer:$154

Explanation:

Given

the radius of the circular board is
$r=3.5\ m$

The cost of paint is
$\$4\ \text{per}\ m^2$

Area of circle
$=\pi r^2$

Area of board

$\Rightarrow A=\pi r^2\\\\\Rightarrow A=(22)/(7)* 3.5^2=38.48\ m^2$

Cost of painting

$\Rightarrow C=38.48* 4=153.95\approx \$154$

Conbask answered Sep 29, 2022

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