Answer:12cm
Step-by-step explanation:3+3+3+3 because its 3x3 so their is 3cm on each side
Amy(A): D + 12
Doug(D):D
Ginger(G):2D
SumOfAll(S)=208 : Total points / sum of all three friends
(D+12)+D+2D=208
D+12+3D=208 - transpose 12 to the right side
4D=208-12
4D = 196 - divide both sides by 4
D=49
Therefore, Doug scored 49
you will need to find the area
A=height multiplied by the base divided by 2
❓❓❓Well think of real life problems?