Q.5 In fig ABCD is a square. Area of the shaded circular ring is286 cm

1.	Q.5 In fig ABCD is a square. Area of the shaded circular ring is286 cm". The difference between the radii of the two circles is 7 cm.Find the radius of each circle and the ratio of the area of theunshaded part of the square to the area of shaded circular ring.
Answer» ANSWER: Step-by-step explanation: LET R and r is the radii of outer and inner circle respectively. a/c to question, R -r = 7 cm --------------(1) πR² -πr² = 286 cm² π(R -r)( R + r ) = 286 cm ² 22/7 × 7 (R + r) = 286 cm² (R + r) = 13 ---------(2) from equation (1) and (2) R =10 cm r = 3 cm Please MARK me as brainliest :)

Q.5 In fig ABCD is a square. Area of the shaded circular ring is286 cm". The difference between the radii of the two circles is 7 cm.Find the radius of each circle and the ratio of the area of theunshaded part of the square to the area of shaded circular ring.

Answer»

ANSWER:

Step-by-step explanation:

LET R and r is the radii of outer and inner circle respectively.

a/c to question,

R -r = 7 cm --------------(1)

πR² -πr² = 286 cm²

π(R -r)( R + r ) = 286 cm ²

22/7 × 7 (R + r) = 286 cm²

(R + r) = 13 ---------(2)

from equation (1) and (2)

R =10 cm

r = 3 cm

Please MARK me as brainliest :)

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Q.5 In fig ABCD is a square. Area of the shaded circular ring is286 cm". The difference between the radii of the two circles is 7 cm.Find the radius of each circle and the ratio of the area of theunshaded part of the square to the area of shaded circular ring.​

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Q.5 In fig ABCD is a square. Area of the shaded circular ring is286 cm". The difference between the radii of the two circles is 7 cm.Find the radius of each circle and the ratio of the area of theunshaded part of the square to the area of shaded circular ring.