A rectangle has a perimeter of 18. The height of the rectangle is 4 cm. What is the area of the rectangle?

20

Step-by-step explanation:

Perimeter of rectangle= 2l+2h so 2l+2(4)=18. SO 2l=10. l=5

Area=bh

(5)(4)=20cm

20 cm, I think
The perimeter is 18 and the height is 4 cm.

4 cm x 2 = 8
We are multiplying it by two because there are two side in a rectangle that are the same height

18 - 8 = 10
We are finding the length of the rectangle
10\2 = 5
The length of the rectangle is 5

5 x 4 = 20
That is the area

The point s is where the suppl curve and demand curve meet. Hence moving down to point U would indicate an increase in quantity demanded because a shift to the right on supply curve, ie moving down to point u from point s indicates an increase in supply so that means an increase in quantity demanded. If it were to move the other way, ie to the left, then it would show a decrease in supply and a decrease in quantity demanded.
Hope this helps! Any questions please just ask! Thank you so much!!