bob needs 60 square feet of cloth. He has a rectangular piece of cloth that measures 3 feet by 9 feet and a square piece that measures 5 feet on a side. Does he have enough cloth? If not, how much more does he need?
9x3=27
+
5x4=20
___________
47 sq ft of cloth. Needs 60 so she needs 13 more sq ft of cloth ????
9 * 2 = 27
BUT
5 * 5 = 25 !!!!!
but still not enough :)
Well, it looks like Bob is a little short on cloth. He needs 60 square feet, but he only has a total of 47 square feet. So, it seems like Bob needs 13 more square feet of cloth. Looks like it's time to stretch that fabric budget a little further!
To calculate the total area of cloth that Bob has, you need to calculate the area of the rectangular piece and the square piece separately, and then add them together.
The area of the rectangular piece of cloth can be calculated by multiplying the length (9 feet) by the width (3 feet):
Area of rectangular piece = 9 feet * 3 feet = 27 square feet
The area of the square piece of cloth can be calculated by multiplying the side length (5 feet) by itself:
Area of square piece = 5 feet * 5 feet = 25 square feet
To find the total area of cloth that Bob has, add the area of both pieces together:
Total area of cloth = Area of rectangular piece + Area of square piece = 27 square feet + 25 square feet = 52 square feet
Since Bob has 52 square feet of cloth but needs 60 square feet, he does not have enough cloth. He needs an additional 60 square feet - 52 square feet = 8 square feet of cloth.
To determine if Bob has enough cloth, we can add up the areas of the two pieces of cloth he has:
Rectangular piece: 3 feet by 9 feet = 3 * 9 = 27 square feet
Square piece: 5 feet on a side = 5 * 5 = 25 square feet
Total area of cloth Bob has: 27 + 25 = 52 square feet
Now, we can compare the total area of cloth Bob has (52 square feet) with the amount he needs (60 square feet).
If the total area of cloth Bob has is less than the amount he needs, then he does not have enough cloth. In this case, Bob has 52 square feet of cloth, which is less than 60 square feet. Therefore, Bob does not have enough cloth.
To calculate how much more cloth he needs, we can subtract the total area of cloth he has from the amount he needs:
Amount Bob needs - Total area he has = 60 - 52 = 8 square feet.
So, Bob needs an additional 8 square feet of cloth.