NTSE Stage 2 SAT 2016 Question Paper

Question : 49 of 100

Marks: +1, -0

A calf is tied a rope of length 12m at a corner of a rectangular field of the dimensions 35m×25m. If the length of the rope is increased to 23 m, then the additional grassy area in which the calf can graze is :

(\Take \π=22/7)

$280..0 \m^{2}$
$300..0 \m^{2}$
$302.5 \m^{2}$
$312.2 \m^{2}$

Validate

Solution:

Increase in area

\θ/360°×\π(23)^{2}-\θ/360°×\π(12)^2

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