Question

Rain which falls onto a flat rectangular surface of length 6m and width 4m is collected in a cylinder of internal radius 20 cm. What is the depth of water in the cylinder after a storm in which 1 cm of rain fell?

Answer 1

Volume of water=LWH=600*400*1=240000cm^3

Answer 2

ok

Answer 3

ok

Answer 4

so
pi*h*r^2=240000
h= 240000/(pi*100)

Answer 5

ok

Answer 6

ok

Answer 7

h= 240000/(pi*100)
=2400/pi
=763.94cm
=7.6m

Answer 8

ok got it

Answer 9

Is this the final answer?

Answer 10

yaa

Answer 11

But the answer written in the book should be 191 not 7.6

Answer 12

oh sry.. conver m into cm

Answer 13

convert m into cm

Answer 14

so 600cm and 400 cm

Answer 15

So it will be 6*4=24m