Julio wants to find the number of blades of grass in his back yard. He marks out a square with one-foot-long sides. He counts 3000 blades of grass in the square. His backyard, shown below, is rectangular and completely covered with grass

Question

Julio wants to find the number of blades of grass in his back yard. He marks out a square with one-foot-long sides. He counts 3000 blades of grass in the square. His backyard, shown below, is rectangular and completely covered with grass

square is 60ft by 50ft
Approximately how many blades of grass are in his backyard?

Answer 1

The area of the square is given by the formula A = s^2, where s is the length of the side of the square. In this case, the area of the square is 1 foot * 1 foot = 1 square foot.

So, the number of blades of grass per square foot is 3000 blades.
The area of the backyard is given by the formula A = length * width = 60ft * 50ft = 3000 square feet.
Therefore, the approximate number of blades of grass in his backyard is 3000 blades/square foot * 3000 square feet = 9,000,000 blades of grass.