Use each of the three corresponding base and height pairs to find the area of the triangle. Why is the area the same for each​ calculation?
42 cm
15 cm
30 cm
21 cm
7.5 cm
10.5 cm
Question content area bottom
Part 1
Find the area using each base and height pair.
Aequalsone half
times30times
21
equals
  
315 cm squared
Aequalsone half
times15times
7.5
equals
  
56.25 cm squared
Aequalsone half
times42times
10.5
equals
  
220.5 cm squared
​(Type whole numbers or​ decimals.)