Question

water is flowing at the rate of 15 km/hr through a cylindrical pipe of diameter 14cm. into a cuboidal pond which is 50cm long and 44m wide. In what time the level of water in pond rise by 21cm? ​

Answer 1

Answer:

50 minutes

Step-by-step explanation:

Vol. of water in pipe in 1hr=

$\pi {r}^{2}h$

$\frac{22}{7 } \times 49 \times 1500000$

154×1500000

231000000cm^3 ----------1

Vol. of tank = lbh

= 50×4400×21=4400×1050

=4620000cm^3 ------------2

Dividing equation 1 by 2

No. of minutes = 231000000÷4620000= 50

ANSWER-- 50 minutes