Question

3. To conduct Sports Day activities, in
your rectangular shaped school
ground ABCD, lines have been
drawn with chalk powder at a
distance of 1m each. 100 flower pots
have been placed at a distance of 1m
from each other along AD, as shown
1
in Fig. 7.12. Niharika runs th the
4
distance AD on the 2nd line and
1
posts a green flag. Preet runs 5 th
the distance AD on the eighth line
and posts a red flag. What is the
distance between both the flags? If
Rashmi has to post a blue flag exactly
halfway between the line segment
joining the two flags, where should
she post her flag?​

Answer 1

Answer:

ANSWER

AD=100 m and AB=10m

The coordinates of Niharika's flag =(2,25) and the coordinates of Preet's flag =(8,20).

A(2,25) and B(8,20)

AB =

(20−25)

2

+(8−2)

2

=

(−5)

2

+6

2

=

25+36

=

61

Distance between both flags is

61

m.

Rashmi has to place her flag at the midpoint of AB.

MIdpoint of AB = (

2

2+8

,

2

25+20

) = (5,22.5)

Rashmi must place her flag along the fifth line at 22.5 m from A.

Answer 2

hope it's help u..........