Question

Which number is closest to sqrt(10). A)3.1 B)4.3 C)3.6 D)2.8

Answer 1

Hello,

Answer 3.1

Explanation:

Let's calculate the square of each positive number

since a <b <==> a² < b²

`(√(10)) ^2=10\\\\3.1^2=9,61\\|10-9.61|=0,39\\4.3^2=18,49\\|10-18.49|=8,49\\3.6^2=12,96\\|10-12.96|=2,96\\\\2.8^2=7,84\\|10-7.84|=2,16\\\\0.39 < 2.16 < 2.96 <8.49\\Answer: 3.1`

Answer 2

A

Explanation:

sqrt(10)=3.2 (rounded to the nearest tenth). 3.2 is closer to 3.1 than 3.6 .