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
Answers
Answered by
1
Step-by-step explanation:
=pi*20*20-pi*15*15
= pi(400-225)
= pi* 175
= 22/7 *175
= 22*25= 550 cm^2
Answered by
3
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
Similar questions