Math, asked by sargunpreet123, 3 months ago

Question 1.
How many litres of water flows out of a pipe having an area of cross section 5 min
1 minute, if the speed of water in the pipe is 30 cm s?

Question 2.
The circumference of the trunk of a tree cylindrical in shape is 132 cm. Find the volume of Jimber that can be obtained from a trunk, if the length of the trunks 15 m

Question 3.
The radius and height of a cylinder are in the ratio 4:7 and its volume is 1188 cm Find
its radius​

Answers

Answered by mondalsanjit91174
0

Answer:

ANSWER:1

Speed of water =30 cm/s ;

Area of pipe =5 cm

2

;

Volume flowing per unit time =30 cm/s×5 cm

2

=150 cm

3

/s

1 Litre=1000 cm

3

Volume flowing per unit time =0.15 Litre/sec

In 1 minute water that will flow=0.15 ×60 Litres

=9 Litres

Step-by-step explanation:

ANSWER:2

We have,

2πr=176 and h=300cm

⇒2×

7

22

×r=176 and h=300cm

⇒r=28cm and h=300cm

Volume of timber=

7

22

×28×28×300cm=

1000000

739200

=0.7392m

3

.

ANSWER:3

Let the radius of the base and height of the cylinder be 5x cm and 7x cm respectively. Then,

Volume = 550 cm

3

7

22

×(5x)

2

×7x=550

22×25x

3

=550

x=1 cm

Hence, radius of the cylinder = 5x = 5 cm.

Answered by raunakhossain552
0

Answer:

area of cross section of pipe =5cm/sq

speed of water flowing out of the pipe=30/sec

volume of water flows out in 1sec=5×30cm/q=150cm/q

:.volume of water flows out in 1minute=150×60=9000cm/q =9 litters

Similar questions