what do i do divide ???
1. a circle with a diameter of 12-inches is inscribed in a square. What is the area of the circle? What is the area of the square?
2. Amy has just learned to ride a bicycle. Her tires have a circumfrence of 28-inches. She made it 392 inches befor falling. How many revolutions did she make ?
3. A circle with a diameter of 5-inches is inscribed inside a square. What is the area of the circle? What is the area of the square?
2007-10-18 07:25:04 · 2 answers · asked by I walk,my walk & Talk,my talk 3 in Science & Mathematics ➔ Mathematics
1. if the diameter is 12, then the square is 12 x 12
area of sq = 144
area of circle = pi r sq = 3.14 x 6 x 6=113.04
2. each revolution will move the bike one circumference forward. as the circumference is 28, divide the total distance travelled by 28. this will give you the number of revs
repeat 1 for 3
2007-10-18 07:31:21 · answer #1 · answered by hawaiis0 3 · 1⤊ 0⤋
A circle = pid^2/4 = pi*12^2/4 = 36pi in^2
A square = 12^2 = 144 in^2
392/28 = 14 revolutions
A circle = pid^2/4 = pi*25/4 = 6.25pi in^2
a square = 5^2 = 25 in^2
2007-10-18 14:32:39 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋