Answer:
One
Step-by-step explanation:
Answer:
1. 9.12
2. 10.64
3. 12.16
b- No it does not because it does not include the 5 pennies that are already there.
Step-by-step explanation:
Check the picture below.
you have 3 medians segments up there.
A = L * W
A = 54
L = 2W + 3
54 = W(2W + 3)
54 = 2W^2 + 3W
2W^2 + 3W - 54 = 0
(2W - 9)(W + 6) = 0
2W - 9 = 0
2W = 9
W = 9/2
W = 4.5 <== width
W + 6 = 0
W = -6....it wont be this one because it is negative
L = 2W + 3
L = 2(4.5) + 3
L = 9 + 3
L = 12 <==length
