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A circular plate expands uniformly under...

A circular plate expands uniformly under the influence of heat. If it's radius increases from 10.5 cm to 10.75 cm, then find an approximate change in the area and the approximate percentage change in the area.

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The correct Answer is:
`4.76%`
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Column I, Column II a)A circular plate is expanded by heat from radius 6 cm to 6.06 cm. Approximate increase in the area is, b)If an edge of a cube increases by 2%, then the percentage increase in the volume is, c)If the rate of decrease of (x^2)/2-2x+5 is thrice the rate of decrease of x , then x is equal to (rate of decrease in nonzero)., d)The rate of increase in the area of an equailateral triangle of side 30c m , when each side increases at the rate of 0. 1c m//s , is, p. 5 q. 0.72 pi r. 6 s. (3sqrt(3))/2