How many feet are there in 5 yards? In of a yard? In 5 yards? A distance of 5 yards is called a rod. How many feet in a rod? A barn 4 rods long is how many yards in length? How many feet? How many rods long is your schoolroom? measuring. Find by Find the perimeter of a field 32 rods long and 25 rods wide. Name a place about a mile from your home. One about 2 miles. One about half a mile. A distance of 320 rods is called a mile. How many rods in of a mile? are In of a mile there are rods. rods; in of a mile there What part of a mile is 160 rods? 80 rods? 344. If you walk 20 rd. a minute, how long will it take you to walk a mile? What is the perimeter of a field 80 rods square? If a boy walks a mile to school in 20 minutes, he walks at the rate of rods a minute or miles an hour. What is the length of this line? If 1 inch represents 3 feet, what does the line represent? Then to what scale is the line drawn? A line 6 in. long is drawn to the scale of 1 inch to 3 feet. What length does the line represent? Draw a line 5 in. long. Let each inch represent 3 feet. What length does the whole line represent? What would the line represent if the scale were 12 feet to 1 inch? Making each inch represent 10 feet, draw a line to represent 30 feet. 40 feet. 25 feet. A field is 48 rods long and 36 rods wide. Represent it on a scale of 12 rods to the inch. A township in some states is a mile square. Draw a map of one on a scale of 1 inch to 80 rods. 345. 1. A room 18 ft. long is how many yards long? A fence is 11 yards or rods long. 2. feet or 3. The perimeter of a rectangle is 40 feet. If the length is 12 feet, what is the width ? 4. Ten rods is how much greater length than 50 yards? 5. Find the distance around the schoolhouse in feet. In yards. In rods. 6. Frank can walk 3 miles in an hour. In what time can he walk 160 rods? 7. A room is 16 ft. square. What is the distance around it? 8. What part of a yard is 1 ft. 6 in.? 9. How How many feet and inches in of a rod? 10. The distance to the moon is 240,000 miles. If a bullet traveled 1000 miles an hour, it would reach the moon in hours. B Α D These lines represent a part of a road. They are. drawn to a scale of 1 inch to 3 miles. E F 11. How far is it from A to B? From B to C? 12. How many miles is it from D to E? From C to D? 13. Find the distance from F to C. From F to A. 14. The distance from E to D is what part of the distance from B to C? 15. A man wishes to drive from A to C. When he reaches B, what part of the distance has he gone? 16. If the wheels of a bicycle turn twice around in going one rod, how many times will they turn in going from F to E? 17. A room is 18 ft. long and 15 ft. wide. The carpet is laid lengthwise and is a yard wide. How many strips are there on the floor? What is the length of each strip? How many yards in all the strips? 18. If the carpet is a yard wide, and is laid lengthwise, how many yards will cover the floor of a room 12 ft. wide and 16 ft. long? Square Measure. 346. Square Measure is used in measuring surfaces. 3 Ft. 3 Ft. 15g Ft. 144 square inches (sq. in.) = 1 square foot (sq. ft.). 9 square feet 301 square yards 160 square rods = 1 square yard (sq.yd.). = 1 1 square rod (sq. rd.). = 1 acre (A.). We have learned what a square foot is. Draw one, and divide it into square inches, How many square inches in one row? In all rows? Then how many square inches make 1 square foot? How many square inches in 2 sq. ft.? In of a square foot? What part of a square foot is 72 sq. in.? 36 sq. in.? How many square feet are there in 288 sq. in.? Draw a square yard, divide it into square feet, and find how many square feet make 1 square yard. In 2 sq. yd. how many square feet? In 5 sq. yd.? A square 1 rod long and 1 rod wide is called a square rod. How many square rods in a garden 5 rd. long and 3 rd. wide? Make a map of the garden, letting 1 inch represent a rod. Areas. 347. The Area of a surface is the number of square units of A measure it contains. If each side of one of the small squares in the figure is one inch long, then each part is 1 square inch (square unit of measure). B The area of the strip AB is 4 X 1 sq. in., or 4 sq. in., and the total area is 3 × 4 sq. in., or 12 sq. in. The area of a rectangle is expressed by the product of the numbers that represent its length and width. 348. 1. How many square feet in a strip of carpet a yard wide and 10 yards long? 2. A table is 6 ft. long and 3 ft. wide. It contains sq. ft., or sq. yd. 3. How many square feet of oilcloth will cover a floor 15 ft. square? How many square yards? 4. Find how many square yards would be needed to cover your kitchen at home. What would it cost at 30¢ a square yard? 5. A lot is 16 rd. long and 5 rd. wide. How many square rods in it? What part of an acre? 6. What part of an acre is 40 sq. rd.? 7. In 2 acres how many square rods? 10 A.? 8. An acre and 40 sq. rd. 9. A. 120 sq. rd.? In 5 A.? In A field is 16 rd. by 20 rd. How many acres in it? 10. A rug is 9 feet square. How many square feet in it? 11. The area of a rectangle 8 ft. long is 40 sq. ft. What is the width? |