Step-by-step explanation:
Shes wrong because she did it in 3 hours which means she would have made 3 cards and not 9.
Two million,two hundred one thousand ,seven hundred sixty
To find the length of the base, we have to understand that area of triangle:
Base x height/2
Therefore we would multiply the area by 2 and divide by 4 to find the answer:
24x2/4
=48/4
=12
Therefore the answer is 12m.
Hope it helps!