Question

9. The perimeter of a triangle ABC with
vertices A(0, 4), B(0, 0) and C(3, 0) is:
(a) 5 units
(b) 11 units
(c) 12 units (d) (7+5) units​

Answer 1

Answer:

12 units

Step-by-step explanation:

For finding out the length OA,

By Using distance formula,

⇒OA=(0−0)2+(4−0)2−−−√=16−−√=4 units

For finding out the length OB,ss

By Using distance formula,

⇒OB=(3−0)2+(0−0)2−−−−−−√=9–√=3 units

For finding out the  length AB,

Using distance formula,

⇒AB=(0−3)2+(4−0)2−−−−−√=9+16−−−−−√=25−−√=5 units

Perimeter of triangle ABC, P=AB+BC+AC

P = 3 units + 4 units + 5 units = 12 units ------------ ANSWER