Exemplar exercise problems I — task. Mathematics CBSE, Class 10.

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1. If the sum of the areas of two circles with radii

$R_1$ and

$R_2$ is equal to the area of a circle of radius

$R$ , then

$R_1^2 + R_2^2 = R^2$
$R_1+R_2=R$
$R_1+R_2 < R$
$R_1^2 + R_2^2 < R$

2. If the sum of the circumferences of two circles with radii

$R_1$ and

$R_2$ is equal to the circumference of a circle of radius

$R$ , then

$R_1+R_2<R$
$R_1+R_2=R$
$R_1+R_2>R$
Nothing definite can be said about the relation among $R_1$ , $R_2$ and $R$

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