A rectangle on a coordinate plane has a length of 5 units and a width of 3 units. If the rectangle is dilated by a scale factor of 5, what is its new area?
__ square units
The original area of the rectangle is length times width, which is 5 units * 3 units = 15 square units.
When a figure is dilated by a scale factor of 5, every length and width is multiplied by 5. So, the new length is 5 units * 5 = 25 units, and the new width is 3 units * 5 = 15 units.
The new area of the rectangle is the new length times the new width, which is 25 units * 15 units = 375 square units.