342=_____
ক
1156
খ
1256
গ
1356
ঘ
1456
সঠিক উত্তর: 1156
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 = 302+2×30×4+42 Therefore (30+4)2 = 900+240+16 Therefore (30+4)2 = 1156.