Answer:
Step-by-step explanation:
4b+8=40
4b=32
b=8
Answer:14x5=70.
Step-by-step explanation:
If two sides of a rectangle add up to 18cm and the area is 80 units squared then the length is 10cm, and the width is 8cm. If you add 10 and 8 together you get 18, and if you multiply those you get 80 units squared. Hope this helps!
