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Builder ‘A’ says that the flat is square shaped and the area is 3853 square feetb) Builder ‘B’ says that the flat is square shaped and the area is 3249 square feet .c) Builder ‘C says that the flat is square shaped and the area is 3844 square feet.A) Without doing calculations, Identify which builder is definitely giving a wrong flat size . Explain, how you derive this conclusion. |
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Answer» Builder A is wrong Step-by-step explanation: All of them SAY that the flat is square-shaped. So the area should be the square of sides Area=SIDE² So let's see if the area is actually a square of a side Builder A: Area=3853 square feet Now, we see the digit at Ones place. By observing, we see that there is no number whose Ones digit when squared, gives 3 at place(Think of square of numbers from 1 to 10 and the Ones digit at the squared number) Builder B and C: Area=3249 and 3844 square feet respectively In both of there cases, we can see that there are numbers with there Ones digit squaring to 4 (B's case) and 9 (C's case) as 2 and 4. THEREFORE, A is wrong |
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