A chocolate wrapper is 6.7 cm long and 5.4 cm wide. Calculate its area up to a reasonable number of significant figures. Ans. (36 cm²)


Given: 

Length of the Chocolate Wrapper = l = 6.7 cm
Width of the Chocolate Wrapper = w = 5.4 cm

To find: 

Area = A = ?
Significant figures = ?

Solution: 

As 

Area = Length ｘ Width

Area = l ｘ w

by putting values

Area = 6.6 cm ｘ 5.4 cm

Area = 36.018 cm²

Area = 36 cm² (by rounding off to two significant figures because in the given numbers we have the least significant figures of 2).


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