I think the answer is A.
It's probably wanting you to use pythagorean theorem.
Idk but ima try to figure it out ok
Answer:
k = 28
Step-by-step explanation:
12/k = 18/42
Cross multiply.
18k = 12 * 42
18k = 504
Divide both sides by 18.
k = 28
Answer:
900m or 300m
Step-by-step explanation:
45 x 20 = 900
30 x 10 = 300