How do i aproximate 74 using perfect squares

Answer 1

74

9^2 = 81

8^2 = 64

8<sqr74<9

81-74= 7

74-64 = 10

sqr74 is somewhere between 8 and 9 but a little closer to 9 than to 8.

So estimate sqr74 = 8.6

a little more than midway between 8 and 9, a little more than 8.5

81 is closer to 74 than 74 is to 64