34^2=_____ A. 1156 B. 1256 C. 1356 D. 1456 This question was

34-2-a-1156-b-1256-c-1356-d-1456-this-question-was

34^2=_____

A. 1156

B. 1256

C. 1356

D. 1456

This question was posed to me in quiz.

My question comes from Finding the Square of a Number topic in portion Squares and Square Roots of Mathematics – Class 8

Correct answer is A. 1156

Easiest explanation: In order to calculate the square of 34 we use the formula,

(a+b)^2, where we consider a=30 and b=4

Therefore (30+4)^2 = 30^2+2×30×4+4^2

Therefore (30+4)^2 = 900+240+16

Therefore (30+4)^2 = 1156.