Math, asked by AryanChandra2145, 1 year ago

Which has a larger area left out? Cutting 9 circles each of radius 7 cm from a square of side 42cm

Answers

Answered by danielochich
1
Formulas :

Area of a circle is :

πr²

Taking π = 22/7

Area of the circle of radius 7cm
is :

(22 / 7) × 7 × 7 = 154 cm

For the 9 circles :

9 × 154 = 1386 cm²

Area of the square :

42 × 42 =1764cm²

The Area left out is :

1764 - 1386 = 378 cm²

The area left out is 378 cm²
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