The area of a rectangular poster is 30 square inches if the width of the poster is 5 in how tall is the poster

A = length times width

30 = 5L
30/5 = L

____ inches = Length

I've never seen such a small poster -- only 5 inches wide???

6 inches

Yes. The poster is 6 inches long.

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To find the height of the poster, we can use the formula for the area of a rectangle:

Area = Length × Width

Given that the area is 30 square inches and the width is 5 inches, we can substitute these values into the formula:

30 = Length × 5

To isolate the unknown variable (Length), we need to solve for it. We can do this by dividing both sides of the equation by 5:

30 ÷ 5 = Length

This gives us:

6 = Length

Therefore, the height of the poster is 6 inches.