1.

Find the area of ring shaped region enclosed between two concestric circles of ratio 30cm and 20cm.​

Answer»

The area of a ring shaped region=π(20) 2 −π(15) 2 =(400−225)× 722 =(175)× 722 =550 SQ. cmStep-by-step explanation:hopes it is HELPFUL to you Mark me as brain list



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