[" find the cost of metal sher the container,if tit costs Rs "8" per "100cm^(2)" .(Use "pi" - "3.14" ) "],[" Wattil it irrigate in "30" minutes,if "8cm" of standing water is needed? "]

Water in a canal,6m wide and 1.5m deep,is flowing with a speed of 10km/h. How much area will it irrigate in 30 minutes,if 8cm of standing water is needed?

Water in a canal,6 m wide and 1.5 m deep,is flowing with a speed of 10km/h.How much area will it irrigate in 30minutes,if 8cm of standing water is needed?

Water in a canal, 6 m wide and 1.5 m deep, is flowing with a speed of 10 km / h . How much area will it irrigate in 30 minutes, if 8 cm of standing water is needed?

Water in a canal , 6m wide and 1.5cm deep, is flowing with a speed of 10km/h. How much are a will it irrigate in 30 minutes , if 8cm of standing water is needed ?

Water in a canal 6 m wide and 1.5 m deep is flowing with a speed of 10 km/h. How much area will it irrigate in 30 minutes, if 8 cm of standing water is needed ?

Water in a canal, 6 m wide and 1.5 m deep, is flowing with a speed of 10 km/h. How much area will it irrigate in 30 minutes, if 8 cm of standing water is needed?

Water in a canal. 6m wide and 1.5 m dep. Is flowig with a speed of 10 km//h . How much area will it irrigate in 30 minutes if 8 cm of standing water is needed ?

Water in a canal 30dm wide and 12dm deep, is flowing with a velocity of 100km per hour. How much area will it irrigate in 30 minutes if 8cm of standing water is desired?

A container made of a metal sheet open at the top is the form of frustum of the cone, whose height is 16 cm and the radii of its lower and upper circular edges are 8 cm and 20 cm respectively. Find (i) the cost of metal sheet to make the container if it costs ₹ 10 per 100 cm^(2) (ii) the cost of milk at the rate of ₹ 35 per litre which can fill it completely.