Mathematics, 19.08.2021 22:40 katekatdawsonke3863
Pls help
The formula for the volume of a pipe with outer radius R, inner radius r and length L is
V=π(R2 − r2)L
What is the value of V when π = 22/7, R =11, r = 9 and L = 7?
Answers: 3
Mathematics, 21.06.2019 22:30
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Ithink i know it but i want to be sure so can you me out ?
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Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.
Answers: 1
Mathematics, 22.06.2019 01:00
For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)
Answers: 3
Pls help
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