he is installing lights in his 15 feet by 24 feet garden. the lights need to be place 3 feet apart a long the perimeter. how many lights he needs for his garden?

To determine the number of lights needed for the garden, we first need to calculate the perimeter of the garden. The formula to calculate the perimeter of a rectangle is given as:

Perimeter = 2 * (Length + Width)

Given that the length of the garden is 15 feet and the width is 24 feet, we can substitute these values into the formula:

Perimeter = 2 * (15 + 24)
Perimeter = 2 * 39
Perimeter = 78 feet

Now that we know the perimeter of the garden is 78 feet, we need to calculate the number of lights required. The lights should be placed 3 feet apart along the perimeter. We can calculate the number of lights by dividing the perimeter by the distance between each light:

Number of lights = Perimeter / Distance between lights

Number of lights = 78 / 3
Number of lights ≈ 26

Therefore, the individual needs approximately 26 lights for his 15 feet by 24 feet garden, placing them 3 feet apart along the perimeter.