Answer:
As shown in picture, this is a trapezoid.
The area of a trapezoid is calculated by:
A = (base1 + base2) x height x (1/2)
To work out A, we need to find out base1, base2, and height.
base1 = YZ =
base2 = XW =
Otherwise, the height (distance between base1 and base2) is 4 as shown in picture.
=> A = (3 + 7) x 4 x (1/2) = 20
Hope this helps!
:)
Answer:
Step-by-step explanation:
B=A-6
A+B=22
substitute: A+(A-6)=22 =>A=14
B=14-6=8
8 years later, Amy will be 22, Bill will be 14