A rectangular tank is 80 m long and 25 m broad. Water flows into it th

1.	A rectangular tank is 80 m long and 25 m broad. Water flows into it through a pipe whose cross-section is 25 cm2, at the rate of 16 km per hour. How much the level of the water rise in the tank in 45 minutes.
Answer» Given, Dimension of rectangular tank = 80m × 25m = 8000cm × 2500cm Cross section area of pipe = 25 cm² Rate of flow of water through pipe = 16 km/h Length of pipe = flow of water through it in 45 minute at speed 16 km/h \(=\cfrac{45}{60}\times16\times1000\times100\) cm Volume of pipe = \(=\cfrac{45}{60}\times16\times1000\times100\) cm³ = h = \(\cfrac{16000\times100\times45\times25}{60\times8000\times2500}\) = 1.5 cm

A rectangular tank is 80 m long and 25 m broad. Water flows into it through a pipe whose cross-section is 25 cm2, at the rate of 16 km per hour. How much the level of the water rise in the tank in 45 minutes.

Answer»

Given,

Dimension of rectangular tank = 80m × 25m = 8000cm × 2500cm

Cross section area of pipe = 25 cm²

Rate of flow of water through pipe = 16 km/h

Length of pipe = flow of water through it in 45 minute at speed 16 km/h

\(=\cfrac{45}{60}\times16\times1000\times100\) cm

Volume of pipe = \(=\cfrac{45}{60}\times16\times1000\times100\) cm³

= h = \(\cfrac{16000\times100\times45\times25}{60\times8000\times2500}\) = 1.5 cm