# What is the perimeter of a triangle with corners at #(7 ,2 )#, #(8 ,3 )#, and #(4 ,5 )#?

##### 1 Answer

Apr 22, 2016

Perimeter is

#### Explanation:

The formula for distance between two points

Hence length of three sides will be given by

#sqrt((8-7)^2+(3-2)^2)=sqrt(1+1)=sqrt2=1.4142# #sqrt((4-8)^2+(5-3)^2)=sqrt(16+4)=sqrt20=2sqrt5=2xx2.236=4.472# #sqrt((4-7)^2+(5-2)^2)=sqrt(9+9)=3sqrt2=4.2426#

Hence perimeter is