Question

42
S.K.
EXERCISE
1. The perimeter of a triangle is 600 m. If the ratio of its sides is 12:13:15 then find
the longest side
(a) 180
(b) 195
17225
(d) 220
2. V343 = ?
a) 7
(b) 9
(c) 11
(d) 5
(5+2√3)(5-2/3)
(a) 15
(b)21
(c) 12
(d) 13
70% of a sum is 49 then the sum is :
(2) 70
(b) 80
A train passes a pole in 10 seconds at the speed of 36 km/h then length of the
train is :
(a) 200 m
) 100 m
(c) 180 m (d) 120 m
(c)75
(d) 72​

Answer 1

Answer:

1)-12x+13x15x=600

25x+15x=600

40x=600

x=600/40=15

x=15

12x=15*12=180

13x=15*13=195

15x=15*15=225

2)V343=7

because it is a cube

3)(5+2√3)(5-2/3)

=13

4)70%*49=13

5)36/10=3.6=3.6km/h