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Units And Measurement

Question

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A cylinder has a length of 6.92 cm and a radius of 2.54 cm. Express its surface area significant figures.

Solution

Given,
Length of the cylinder, l = 6.92 m
Radius of the cylinder = 2.54 cm
Surface area of the cylinder is given by, A = $2 πrh space plus space πr to the power of 2 space end exponent$ + $πr squared$

Area = 150.89 cm²

Some More Questions From Units and Measurement Chapter

What is the need of measurement?

Define physical quantity.

Give four examples of physical quantities.

Define unit.

What are the two main required characteristics of a unit?

Can we use same units for different physical quantities?

Can we use different units to measure same physical quantity?

To measure a physical quantity X, the unit U is repeatedly used for n times. What is the magnitude of physical quantity?

Does the numerical factor in the quantitative measurement depend on the system of unit used?

Is one unit sufficient to measure a physical quantity?

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