What is the value of $(294) 2$ ?

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86436

87906

86509

86543

answer is A.

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Detailed Solution

The given number is

(294) 2

.
First, divide the supplied number into two parts, leaving the other part that is not a multiple of 10.
294 = 200 + 94
Square the result and simplify it,

2942 = (200 + 94) 2 ⇒ (200 + 94) (200 + 94) ⇒ 200 (200 + 94) + 94 (200 + 94) ⇒ 40000 + 18800 + 18800 + 8836 ⇒ 86436

Hence, the value of

(294) 2

is 86436.
Therefore, option 1 is correct.

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