Question

So I was wondering if any of y'all could help me with this:

1.Calculate the volume of a cylinder of length 40m,height 60m and width of 5m.
2.What is the area of a circle whose radius is 14cm?

3.change 100,000cm into kilometres

4.What is the base area of a cylinder whose volume is 3080cm cubic and a height of 20 cm?

5.Evaluate the height of a cuboid of base area 400 square cm and a volume of 160,000 cm cubic?
6.Calculate the volume of a cylinder of height 4m and a radius of 14m.

7.Calculate the diameter of a circle whose circumference is 88cm

8.The radius of a wheel is 35cm. Calculate how far in meters it will travel in 50 revolutions?
9.Arope of length 2640cm was wound a around a circular drum 20 times. Calculate the radius of the drum.
10.How many poles 12 m apart will fit exactly along a road of 204 m long?
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Answer 1

Explanation:

1. volume of a cylinder = pi x radius squared x height (I wasn't sure which was the radius/diameter)

2. 615.74

3. 1km

4. rearrange formula for volume of the cylinder to get the radius on 1 side. divide both sides by height and pi to leave u with r². then divide by the square root.

formula= r=square root of 3080³/3.14 × 20

5. height = volume/ pi x radius squared

6. 2463.01

7. 28.01

8. 145.955 m

9. 21.01

10. 17