Question

Please help, will mark you brainliest.... Please help me...

Answer 1

Answer:

d=6

Step-by-step explanation:

We want to find the length of a side, so we can use the distance formula

d = $\sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2}$

$(x_1, y_1)$     =coordinates of the first point

$(x_2, y_2)$ =coordinates of the second point

We are trying to find the length of BC, so we need to use the points B and C

(7,5) and (7, -1)

Substitute the points into the formula

d=$\sqrt{(7-7^{2}+(5--1)^{2} }$

d=$\sqrt{0^{2}+6^{2} }$

d=$\sqrt{0+36}$

d=$\sqrt{36}$

d=6

Hope this helps! :)