What is the side AB of triangle ABC if its perimeter is A see AC = 10cm, BC = 8cm. Find the length AB if A = 25cm.
| August 13, 2021 | education
The perimeter of a triangle with sides a, b and c is calculated by the formula:
P = a + b + c.
To find the side of a triangle, knowing its perimeter, use the following formula:
a = P – b – c.
It is known that the perimeter of the triangle ABC = A cm. Substitute instead of A = 25 centimeters.
Find the side AB, triangle ABC, if AC = 10cm and BC = 8cm:
AB = 25cm – 10cm – 8cm = 7cm.
Answer: the side AB of triangle ABC is 7 centimeters if the perimeter is 25 centimeters.
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