The radii of 2 concentric circles are 56cm and 49cm.Find the area of the pathway.
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Hi ,
Let R , r are radii of two concentric circles.
R = 56 cm ,
r = 49 cm
area of the pathway = πR² - πr²
A = π ( R + r ) ( R - r )
= π ( 56 + 49 ) ( 56 - 49 )
= ( 22/7 ) × 105 × 7
= 22 × 105
= 2310 square cm
I hope this helps you.
:)
Let R , r are radii of two concentric circles.
R = 56 cm ,
r = 49 cm
area of the pathway = πR² - πr²
A = π ( R + r ) ( R - r )
= π ( 56 + 49 ) ( 56 - 49 )
= ( 22/7 ) × 105 × 7
= 22 × 105
= 2310 square cm
I hope this helps you.
:)
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