Answers

2016-04-08T16:24:45+05:30
Height = 21 m

radius = 1.5 m

Volume of circular earth dug up = ?

Volume of circular earth dug up = Volume of cylinder

⇒ Vol. =  \pi r² h

⇒ Vol. = 3 .14 x  1.5 x 1.5 x 21 

⇒ Vol. = 3.14 x 2.25 x 21 

⇒ Vol. =148.365 m³ 
2 3 2
2016-04-08T16:32:58+05:30
The circular well is in the form of a cylinder.
volume of earth dug up = volume of cylinder =πr²h
 given radius of well = 1.5 m
           depth/height of the well = 21
volume of earth dug up = πr²h
                                     = 22/7 ×(1.5)²×21
                                     = 22×2.25×3
                                     = 66×2.25
                                     = 148.50 m³

1 5 1
brainliest pleaseeeeee.....needed