Question

if ratio of the circumference of two circle is 3:1 then find ratio of the areas

Answer 1

9/1 is ratio of area's
2πR/2πr=3/1
R/r=3/1
R=3r
πR^2/πr^2
(R/r)^2
9/1

Answer 2

★ GEOMETRY [ CIRCLES ] ★

Given that the ratio of circumference of two circles is 3:1

Let the radius of two circles be m and n

2πm : 2πn = 3 : 1

Hence, m : n = 3 : 1

Ratio of areas of the circles will be ,

2πm² : 2πn² = m² : n² = 9 : 1

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