Math, asked by ppautocomponents, 10 months ago

find area of Ring of two concentric circle of radius 20 cm and 15 CM

Answers

Answered by uche35

1

Answer:

550cm²

Step-by-step explanation:

Area of ring=22 (R²-r²) ÷ 7

=22 (20² - 15²) ÷ 7

=22 (400-225) ÷ 7

=22×175 ÷ 7

= 3850 ÷ 7

= 550cm²

Hope this helps you dear.

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