4.A 1.2 m tall giri spots a balloon movingwith the wind in a borizontal line at aheight of 88.2 m from the ground. Theangle of elevation of the balloon frormthe eyes of the girl at any instant is60°. After some time, the angle ofelevation reduces to 30° (see Fig 9,13).Find the distance travelled by theballoon during the interval.

4.A 1.2 m tall giri spots a balloon movingwith the wind in a borizonta

1.	4.A 1.2 m tall giri spots a balloon movingwith the wind in a borizontal line at aheight of 88.2 m from the ground. Theangle of elevation of the balloon frormthe eyes of the girl at any instant is60°. After some time, the angle ofelevation reduces to 30° (see Fig 9,13).Find the distance travelled by theballoon during the interval.
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