The area of a ring shaped region enclosed between two concentric circles of radii 20 cm and 15 cm is (A) 750 cm2 (B) 250cm2 (C) 500 cm2 (D) 550cm2 pls answer it i will thank you
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The area of a ring shaped region enclosed between two concentric circles of radii 20 cm and 15 cm is (A) 750 cm2 (B) 250cm2 (C) 500 cm2 (D) 550cm2 pls answer it i will thank you
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Verified answer
Answer:
Option d)550cm^2
Step-by-step explanation:
Let us given R=20 cm & r=15 cm
The area of a ring shaped region=π(20)^2−π(15)^2
=(400−225)×22/7
=(175)×22/7
=550 sq. cm