RRB Junior Engineer Stage 1 Model Papers 9

Question : 16 of 100

Marks: +1, -0

Two circles touch each other internally. Their radii are 2 cm and 3 cm. The biggest chord of the greater circle which is outside the inner circle of length.

$3√2 \cm$
$2√3\cm$
$4√2 \cm$
$3 5/7 \cm$

Validate

Solution:

O′A = 3 cm
OA = 2 cm
CA = 6 cm
O′D = 3 cm
O′B = 1 cm

BD=√{3^2-1}=2√2

DE=4√2 \cm

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