Help with math homework?
The calculation of the volume other dimensions: 1) (cylinder) of a can of paint has 2.5litres (1 l = 1000cm ^ 3) working radius of the can when its length is 16 cm. 2) (cylinder cut in half) This section of the gutter with water up to 20litres rain. calculate the size of the gutters in meters when the diameter is 13 cm. 3) (Cylinder) A small cylinder of diameter of 7 cm and height of 14cm can fill the large cylinder at a height of 5 cm. solve the large cylinder radius. Please help! Still do not get how to do = S
Neither is difficult. You will learn more if you try them yourself. Here are some suggestions. The volume V of a cylinder is the area of its circular base times the height. Since the area of a circle is pi times r ^ 2 (ie rr times), the volume formula is V = pi r ^ 2 h where r is the radius of the base and h is the height. You can plug in any numbers are given in the formula, and solve the mystery. If the cylinder is reduced by half (as the channel), then the volume is 1 / 2 as much, ie, (pi r ^ 2 h) / 2. For problem 3, the two volumes, large and small cylinder with height of 5 must be equal. Try it! —– —- Edit: I forgot to say that pi is a fixed value of approximately of 3.14. If you need more precision using 3.1416.
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