A rectangular sheet of acrylic is $36 c m$ by $24 c m$ . From it, $64$ circular buttons, each of diameter $3 c m$ have been cut out. Find the area of the remaining sheet.

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Solution

Area of sheet $= 36 \times 24$
$= 864 c m^{2}$
Area of $64$ buttons $= 64 \times \frac{22}{7} \times \frac{3}{2} \times \frac{3}{2}$
$= 452.57 c m^{2}$
Remaining area $= 441.43 c m^{2}$

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A rectangular sheet of acrylic is 36 cm by 24 cm. From it, 64 circular buttons, each of diameter 3 cm have been cut out. Find the area of the remaining sheet.

Area of sheet =36×24=864cm2Area of 64 buttons =64×227×32×32=452.57cm2Remaining area =441.43cm2

A rectangular sheet of acrylic is $36 c m$ by $24 c m$ . From it, $64$ circular buttons, each of diameter $3 c m$ have been cut out. Find the area of the remaining sheet.

Area of sheet $= 36 \times 24$
$= 864 c m^{2}$
Area of $64$ buttons $= 64 \times \frac{22}{7} \times \frac{3}{2} \times \frac{3}{2}$
$= 452.57 c m^{2}$
Remaining area $= 441.43 c m^{2}$