Find the ratio of areas of two circles if they have a radius as 5 and 3 respectively. [3 MARKS]

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Solution

Steps: 2 Marks
Answer: 1 Mark

Area of first circle
$A_{1} = π r^{2} = π 5^{2}$

Area of second circle
$A_{2} = π r^{2} = π 3^{2}$

Ratio of the area of two circles:
$π 5^{2} : π 3^{2} = 25 : 9$

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Find the ratio of areas of two circles if they have a radius as 5 and 3 respectively. [3 MARKS]

Steps: 2 Marks Answer: 1 Mark Area of first circle A1=πr2=π52 Area of second circle A2=πr2=π32 Ratio of the area of two circles: π52:π32=25:9

Steps: 2 Marks
Answer: 1 Mark

Area of first circle
$A_{1} = π r^{2} = π 5^{2}$

Area of second circle
$A_{2} = π r^{2} = π 3^{2}$

Ratio of the area of two circles:
$π 5^{2} : π 3^{2} = 25 : 9$