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Romashka [77]
3 years ago
5

A cyclist travels 20 km from home to the park.

Mathematics
1 answer:
yulyashka [42]3 years ago
3 0

Answer:

40 kph

Step-by-step explanation:

I'm not to familiar with km but if it took you 30 minutes to travel 20km you would have to be going 40kph. It's basic math too. If you went 20 kph for 20km it would take you an hour to get there, but since they made it in 30 minutes, you just double the speed.

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The radius of a spherical ball is measured at r = 25 cm. Estimate the maximum error in the volume and surface area if r is accur
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Answer:

Volume = 2384.582 cm^3

Surface Area = 189.626 cm^2

Step-by-step explanation:

With the accuracy of r within 0.6 cm minimum & maximum values are 25-0.3 and 25+0.3 respectively.

Taking r = 25 cm

Volume = (4/3)*Pi*R3 = 65449.847

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The minimum possible values for Volume and surface area would be:

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The maximum possible values for Volume and surface area would be:

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Error from Minimum values:

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Error from Maximum values:

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