Plz help will mark you as brainliest(plz answer 42 and 43
1 answer:
Answer:
Step-by-step explanation:
Sides are 120 m, 170 m, 250 m
<h3>41.</h3>
<u>S is the semi-perimeter and is equal to:</u>
- s = (a + b + c)/2 = (120 + 170 + 250)/2 = 270 m
Correct choice is D
<h3>42.</h3>
The area is easy to calculate using the Heron's formula, since we have all three side lengths known.
Correct choice is B
<h3>43.</h3>
<u>Perimeter is:</u>
- P = a + b + c = 120 + 170 + 250 = 540 m
Correct choice is A
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