Sample Questions and Discussion Around the Rings

Sample Questions and Discussion Around the Rings - Previous Mathematical formulas Basic ever review on Attributes Build Flat and formula Complete in which there is also an explanation of the formula circumference circle. Well, to make you understand much more about how to use the formula in solving problems, below we provide some cobntoh questions about the circumference of the circle complete with explanations and to answer them. Please observe well yes!

Sample Questions and Discussion Around the Rings


Example Problem 1:
Given a circle of radius 14 cm. Calculate the circumference of a circle!

Solved:
Given: r = 14 cm
Asked: circumference

Answer:

k = 2 лr = 2 x 22/7 x 14 = 88 cm

So the circumference of a circle is 88 cm

Example Problem 2: [1945901million]
a rope wound on a roll the radius of 4 cm. The rope is wound by 5 rounds. Calculate the length of the!

Solved:
Given: r = 4 cm
Asked: long rope

Answer:
length of rope = 5 x roving roll = 5 x circumference

k = 2 x 3:14 лr = 2 × 4 = 25.12 cm

length of rope = 5 x circumference = 5 x 25.12 = 125.6 cm
So long rope is 125.6 cm

Example Problem 3: [1945901million]
Madi to school by riding a distance of 792 meters. If the bicycle wheel spokes Madi 63 cm, how many times the wheel spins?

Solved: [1945901million]
Given: r = 63 cm, distance = 792 meters = 79 200 cm
asked: how many times the wheel spins?

Answer:
amount of rotation of the wheel = distance: around the wheel
wheel circumference = circumference = 2 лr = 2 x 22/7 x 63 = 396 cm
The number of rotation of the wheel = 79 200: 396 = 200 times
Thus, a bicycle wheel rotates 200 times

Example Problem 4: [1945901million]
A length of wire along the 176 cm will be made circle. calculate the diameter of the circle it!

Solved:
Given: wire length = 176 cm
Asked: the diameter of the circle

Answer:
wire length = circumference of a circle
circumference = лd
× 176 cm = 22/7 d
d = 176 x 7/22 = 56 cm
Thus, the circle's diameter is 56 cm

Sample Problem 5: [1945901million]
A circular park with a radius of 12 m. around the park will plug a lamp, with a distance of 8 meters. How many lights are needed?

Solved:
Given: r = 12 m
Asked: lots of lights?

Answer:
many lights = circumference of the park: the distance light

k = 2 x 3:14 лr = 2 × 12 = 75, 36 m

many lights = 75.36: 8 = 9:42 (rounded to 9)
So much light is needed is 9 lamps



that was some Sample Questions and Discussion Around the Circle [1945901million] [1945902million] that you can learn at home for hone your ability to answer similar questions. Thank you for listening to this discussion well, I hope you can understand it. See you at the next discussion of issues.

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