find the area between the two concentric circles with radius 7cm and 10.5cm
Answers
Answered by
21
hiii!!!
here's ur answer...
area of the circle ( radius = 7cm ) = πr²
= 22/7 × 7 × 7
= 22 × 7
= 154cm²
area of the circle ( radius = 10.5cm ) = πr²
= 22/7 × 10.5 × 10.5
= 2425.5/7
= 346.5cm²
therefore area between these two circles = 346.5 - 154
= 192.5cm²
hope this helps..!!
here's ur answer...
area of the circle ( radius = 7cm ) = πr²
= 22/7 × 7 × 7
= 22 × 7
= 154cm²
area of the circle ( radius = 10.5cm ) = πr²
= 22/7 × 10.5 × 10.5
= 2425.5/7
= 346.5cm²
therefore area between these two circles = 346.5 - 154
= 192.5cm²
hope this helps..!!
Answered by
4
SOLUTION::-
GIVEN THAT
simlilarly, redius of two circle 7cm and 10.5cm,
area fo each circles ,
pi×r^2 , pi×r^2 = 22/7×(10.5)^2
22/7×49 , 22/7×110.25
154cm^2 , 22×15.75cm^2
154cm^2 , 346.5cm^2
area between circles
= 346.5- 154
= 192.5cm^2
GIVEN THAT
simlilarly, redius of two circle 7cm and 10.5cm,
area fo each circles ,
pi×r^2 , pi×r^2 = 22/7×(10.5)^2
22/7×49 , 22/7×110.25
154cm^2 , 22×15.75cm^2
154cm^2 , 346.5cm^2
area between circles
= 346.5- 154
= 192.5cm^2
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