Math, asked by lhachick5651, 5 hours ago

Builder ‘A’ says that the flat is square shaped and the area is 3853 square feet
b) 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.

Answers

Answered by mkjaiswal11
1

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

Answered by lily614324
0

Answer:

a) Builder A

Step-by-step explanation:

Since the flat is in square shape the

measure of the side would be same

When a number is multiplied by the

same number the last number of the

product will be the square of the last

number of multiplied numbers .

As , we don't get 3 at last by multiplying

any number it is calculated easily.

[If you don't understand what I had explained

above you can consider the way of deriving

the answer I had provided below it can be

done in mind easily ]

Area of square = side × side

(let the side be x )

In case A ,

Area = 3853

= 3853 = x × x

= 3853 = x²

= √3853 = x

In case B ,

Area = 3249

= 3249 = x × x

= 3249 = x²

= √3249 = x

57 = x

In case C ,

Area = 3844

= 3844 = x × x

= 3844 = x²

= √3844 = x

62 = x

From above it is proved that

Builder A is giving wrong definition

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