Answer: the answer is D.
Step-by-step explanation:
30/50 i believe but am not sure
Since the base is 3 inches and the height is 4 inches, as well as the area of a triangle being base*height/2, we get 3*4/2=6 in. for each triangle. Since we need 20 pieces for each puzzle, we multiply 6 by 20 to get 120. In addition, since 80 puzzles are needed, with 20 pieces for each puzzle, we have 120 inches for each puzzle and 120*80 = 9600 square inches of wood used
Answer:
12:20
Step-by-step explanation:
3*4 is 12
multiply 5 by 4 also, and then you get 20