Question

The diameter of the two circles are 4 and 6 centimetre respectively.Find the ratio of there areas.​

Answer 1

Answer:

4:9

Step-by-step explanation:

1st area=22/7×4=88/7

2nd area =22/7×9=198/7

ratio=88/198 =4/9 =4:9

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Answer 2

ANSWER : 88:198

Step-by-step explanation:

LET THERE BE TWO CIRCLES 'A' AND 'B' RESPECTIVELY

FOR CIRCLE A  

DIAMETER=4cm     RADIUS = 2cm

AREA = πR²     = 22/7 × 2×2     = 88/7

FOR CIRCLE B

DIAMETER = 6cm     RADIUS = 3cm

AREA=πR²      =22/7×3×3       = 198/7

RATIO OF THE TWO CIRCLES

AREA OF CIRCLE A/AREA OF CIRCLE B

88/7 ÷ 198/7

88/7×7/198

88/198       OR      88:198