Question

The square of 10.2 is equal to

• A. 102.02
• B. 104.04
• C. 104.02
• D. 102.04

Answer 1

The correct option is B

104.04

$(10.2{)}^2$

$=(10+0.2{)}^2$

$=(10{)}^2+(0.2{)}^2+2\times 10\times 0.2$

$=100+0.04+4$

$=104.04$