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3 years ago

What is the perimeter of abc with vertices A(-2,9) B(7,-3) and C(-2,-3) in coordinate plane

2 answers:

6 0

For the answer to the question above,
A - C = ( -2, 9) - (- 2 -3)

= ( 0, 12) 

AC = 12 

B - C = (7 - 3) - ( - 2 -3) 

= (9, 0) 

BC = 9 

ABC is a right -angled triangle with AC as the hypotenuse 

AC = sqrt( 9^2 + 12^2) 

= sqrt(81 + 144) 

= srqt(225) 

= 15 

Perimeter = 12 + 9 + 15 

= 36 units 

 So the answer is 36 units
I hope my answer helped you.

IRINA_888 [86]3 years ago

4 0

Answer:

36units

Step-by-step explanation:

yeah thatss right

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