Question

Suppose you are asked to find the area of a rectangle that is 2. 1- cm wide by 5. 6- cm long. Your calculator answer would be 11. 76 cm2. Now suppose you are asked to enter the answer to two significant figures. (note that if you do not round your answer to two significant figures, your answer will fall outside of the grading tolerance and be graded as incorrect. ).

Answer 1

The area of the rectangle expressed in two significant figures is 12 cm²

Data obtained from the question

•Width (W) = 2.1 cm

•Length (L) = 5.6 cm

•Area (A) =?

How to determine the area of the rectangle

The area of a rectangle can be obtained as follow:

Area (A) = Length (L) × Width (W)

A = L × W

With the above formula, we can obtain the area of the rectangle as follow:

A = L × W

A = 5.6 × 2.1

A = 11.76 cm²

A ≈ 12 cm² (two significant figures)

Thus, the area of the rectangle is approximately 12 cm²

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