Question

What is the perimeter of triangle ABC? Round answer to the nearest tenth.

A. 12 meters
B. 20.5 meters
C. 22.4 meters
D. 18 meters

Answer 1

Without specific measurements for the sides of triangle ABC, we cannot calculate its perimeter. Triangle perimeter is found by summing all side lengths, but with no given lengths in this case, an exact answer cannot be provided.

Step-by-step explanation:

To calculate the perimeter of triangle ABC without specific measurements of its sides, we cannot determine the exact value. However, if we were given specific measurements for each of the triangle's sides, we could use the formula for perimeter (which is the sum of the lengths of all sides). Similar to finding the perimeter of a rectangle or a square, where we use the formula P = 2l + 2w for a rectangle or P = 4a for a square, a triangle's perimeter is the sum of its three sides.

For example, if a triangle's sides are 7 m, 5 m, and 10 m in length, then the triangle's perimeter would be 7 m + 5 m + 10 m = 22 m.

If the triangle ABC had side lengths given, you would just need to add those lengths together to get the perimeter. Unfortunately, since we do not have the measurements for triangle ABC, we cannot provide an answer from the options given (A. 12 meters, B. 20.5 meters, C. 22.4 meters, D. 18 meters).

Answer 2

Step-by-step explanation:

this is an isoceles, right-angled triangle.

but legs are equally long (6 m), and the baseline is per Pythagoras

baseline² = leg1² + leg2² = 6² + 6² = 36 + 36 = 72

baseline = sqrt(72) = 8.485281374... m

so, the perimeter is

6 + 6 + 8.485281374... = 20.485281374... ≈ 20.5 m

so, B is the right answer.