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Elan Coil [88]
3 years ago
12

Explain how an estimate helps you to place the decimal point when multiplying 3.9x5.3

Mathematics
1 answer:
Pepsi [2]3 years ago
5 0


When you estimate, you round the decimal up.3.9 rounds up to 4 ,5.3 rounds up to 5.

4 times 5 equals 20.The actual answer is 20.67.

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The volume of a cylinder can is 1.54 litre and area of base is 77cm^2 Find its height​
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Answer:

The height is 20 cm.

Step-by-step explanation:

First, we have to know that the volume formula is V = πr²h and the base area of cylinder is a circle. So we can let πr² be 77 cm² . Then we have to substitute the following values into the formula :

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v = 1540 \:  {cm}^{3}

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1540 = 77 \times h

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