216k views
5 votes
Which two consecutive whole numbers is the value of √21 between?

A.4 and 5
B.10 and 11
C.21 and 22
D.42 and 43

Which two consecutive whole numbers is the value of √21 between? A.4 and 5 B.10 and-example-1
User Anthonycr
by
7.8k points

2 Answers

4 votes
The perfect squares on either side of 21 are 16 and 25 of which the roots are:

4 and 5
User Pardeep Pathania
by
7.7k points
4 votes
The answer is: [A]: " 4 and 5 " .
______________________________
Step-by-step explanation:
______________________________
Looking at the answers:
______________________________
we know that 4² = 16 ; and 5² = 25 ;

So: √16 = 4 ; and √25 = 5.

So: √21 must be between √16 and √25 ;

That is: √21 must be between 4 and 5 ; which is answer choice: [A] .
__________________________________________________________
User Userend
by
8.7k points

Related questions

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.