Three coins each 2 cm in diameter are placed touching one another. Find the area enclosed by them.

Find the radius of a sector whose perimeter and arc length are 24 cm and 7 cm respectively.

Time spent by a student in a day is shown in the figure. Find how much time is spent in

(i) school (ii) play ground (iii) other activities

Four horses are tethered with ropes measuring 7 m each to the four corners of a rectangular grass land 21 m x 24 m in dimension. Find

(i) the maximum area that can be grazed by the horses

(ii) the area that remains ungrazed.

Find the area of card board wasted if a sector of maximum possible size is cut out from a square card board of size 24 cm. [π = 3.14].