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Unformatted text preview: Chapter 1r Problem 1EA m (4 Bookmarks} Show all steps: C“ A. 1 A The area of a rectangle 4.5 cm by 3.25 cm is conectltr gitren by (a)14.525 cnt2, (b) 14.63 CM2; {c} 14.6 cm2; (d) 15 cm2 Step-by-step solution steptet2 A The area Of rectangle is, A = it: Here. {is the length and b is the breadth. Substitute 45 miter ,land 3'25 cmfor b in A = it:- A =ib ={4.5 om][3.25 om) =14Jfi25 cm: Step20f2 A Significant digits are the number {if reliable digits in a number. The number Di digits in the final answer should be equal to the smallest number Df digits given in the question. If the digit afier decimal point is greater than 5, then 1 is added to the final answer. The length of rectangle is 45 cm- This is the least number of significant digits in the question. So, the final answer has onlyr two significant figures. SD, round OiT t0 tWD Significant figures. the area of rectangle is 15 cm:- Thus, the correct answer is (d) . ...
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