Question

plz solve this problem

Answer 1

Given,

radius  of  cylinder = 3/2 m

Height  of cylinder  = 3.5 m = 35/10 m = 7/2 m  

We know that,

Volume of  cylinder  = πr²h

                                 = 22/7 × 3/2 × 3/2 × 7/2

                                 = 99/4 m³

∵ 1 m³ = 1000 ltr.

∴ 99/4m³ = 99/4 ×1000 = 24750 ltr.

Now, The volume that  we have to emptied  is half  of  volume  of  cylinder,

Volume  of half  cylinder =  24750/2 = 12375 ltr.

Again, given that  it emptied  at rate  of 225 litre per minute,

Therefore,

∵ 225 ltr emptied in = 1 min

∴ 1 ltr emptied in = 1/225 min

∴ 12375 ltr  emptied in 12375/225 min = 55 minutes.

Answer 2

❤❤ Good Afternoon ❤❤

_____________________________________________________________________________________________________________________________________________

Thanks !!

Here is your answer which you are searching for

Step I

( Write the given )

Given ,

Radius of Cylinder = $\frac{3}{2}$

Height of Cylinder = 3.5

= $\frac{35}{10}$

= $\frac{7}{2} m$

-------------------------------------------------------

Step II

( Putting the value in the formula of Volume of Cylinder )

Volume of Cylinder = $\pi r^{2} h$

= $\frac{22}{7} .\frac{3}{2} .\frac{3}{2} .\frac{7}{2}$

= $\frac{99}{4} m^{3}$

-----------------------------------------------------

Step III

( Convert $\frac{99}{4} m^{3}$ into Litre )

We know that ,

1 $m^{3}$ = 1000 Litre

$\frac{99}{4}  m^{3}$

= $\frac{99}{4} . 1000 </p><p>= 24750 Litres </p><p>------------------------------------------------------</p><h2><em><u>Step IV</u></em> </h2><p>It is Given that the volume that have to emptied is half of Volume of Cylinder </p><p>Volume of Cylinder = 24750 </p><p>= [tex] \frac{24750}{2}$

= 12375 Litres

------------------------------------------------

Step V

Given ,

It Emptied at the rate of 225 litre per minute  

We can Say that ,

225 litre emptied in 1 minute

1 litre emptied in $\frac{1}{225}$ min

Hence ,

12375 litre emptied in $\frac{12375}{225}$ min

Which is equal to 55 min

___________________________________________________________________________________________________________________________________________

Be Brainly

Warm Regards

@Brainlestuser