39. Below are the drawings of cross sections of two different pipes used to fill swimming pools.
Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a
radius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both the
cases, which will fill the swimming pool faster?
Figure A
8cm
-8cm
Figure B
--15cm)
Answers
Pipe B will fills the swimming pool faster.
To find : Which pipe will fill the swimming pool faster.
Given :
There are two pipes named as A and B.
From the figure,
A is a combination of 2 pipes.
Radius of A = 8 cm.
B is a pipe.
Radius of B = 15 cm.
Formula :
Area of circle = πr²
Finding area of the two pipe ( A ) :
Area of one pipe = π × 8 × 8
= × 8 × 8
= 201.14 cm²
Area of two pipes = 2 × 201.14
= 402.28 cm²
Hence, area of the two pipe A is 402.28 cm².
Finding area of the pipe ( B ) :
Area of the pipe = π × 15 × 15
= × 15 × 15
= 707.14 cm².
Hence, area of the pipe B is 707.14 cm².
Area of the two pipe A < Area of the pipe B
402.28 cm² < 707.14 cm².
Therefore, pipe B = 707.14 cm² fills the swimming pool faster.
To learn more...
1. Below are the drawings of cross sections of two different pipes used to fill swimming pools. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both the cases, which will fill the swimming pool faster?
brainly.in/question/15401048
2. To fill a swimming pool two pipes are used. If pipe of larger diameter is used for 4 hrs and pipe of smaller diameter is used for 9 hrs then only half of the pool can be filled . Find how long it would take for each pipe to fill the pool separately if the pipe with smaller diameter takes 10 hrs more than the pipe of larger diameter to fill the pool?
brainly.in/question/1113035
