05.
(5)
External and internal diameter are 42 cm and 35 cm respectively find.
External and internal area and their difference.
()
Answers
Answered by
7
Step-by-step explanation:
radius of the external circle = 21
area of the external circle is πr^2
= 22/7 × 21^2
= 462 cm^2
radius of internal circle is 17.5
area of the internal circle is πr^2
22/7 × 17.5×17.5
= 962.5 cm^2
Similar questions