Answer:
Y x 3 - 3 = Y + 57
30 would be your answer
add 3 to both sides so it becomes Y x 3 = Y + 60 and 60/2=30
30 x 3 = 90-3=87
30 + 57 = 87
Hope this helps (I am twelve and I know how to do this)
Step-by-step explanation:
cm²
3/4 cups.
3 1/8 - 2 3/8 = 3/4
You can solve by the formula of area of trapezium. This is h(a+b)/2.
54 = 6(8+b)/2
Thus b = 10cm.
