Question

the length of shadow of a 10 m 30 cm long electric pole at a certain time of the day is 8 m 20 cm. what is the length of a pole whose shadow is 5m 10 cm long at the same time?

Answer 1

Answer:

height = 6.40 m

Step-by-step explanation:

length of 1st pole h1 = 10m 30cm = 1030 cm

length of shadow s1 = 8m 20cm = 820 cm

length of 2nd pole h2 = x

shadow of the pole s2 = 5m 10cm = 510 cm

using similarity property

h1/s1 = h2/s2

$\frac{1030}{820} = \frac{x}{510} \\ 820x = 1030 \times 510 \\ x = \frac{1030 \times 510}{820} \\ x = \frac{1030 \times 51}{82} \\ x = \frac{515 \times 51}{41} \\ x = 640.60cm$

height of 2nd pole is = 640.60 cm = 6.40 m

hope you get your answer