Question

plz tell me Q9 of this ws​

Answer 1

Answer:

250 cm

Step-by-step explanation:

Hi there !

Here's your answer

Volume of earth dug = volume of cylindrical well

diameter = 7m

radius = 7/2 m

Area of rectangular plot = 308m²

this is length × breadth or what we call is the base area

Volume of earth = volume of the Earth to be spread on top which will obviously rise in level

let the rise in level or the height be 'h'

lb = 308 m²

so, the height is 2.5 m

or

250cm