Two sides of a rectangular metal sheet are measured as and

PHYSICS · Subjective · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

Two sides of a rectangular metal sheet are measured as L1=8.52 cmL_1 = 8.52\,\text{cm} and L2=3.7 cmL_2 = 3.7\,\text{cm}. (i) Calculate the unrounded area of the sheet in cm2\text{cm}^2. (ii) Express this unrounded value in scientific notation. (iii) Round the result to the correct number of significant figures and write the final answer in scientific notation, clearly stating how many significant figures your answer contains.

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