Math, asked by sivakeerthu06pajznn, 1 year ago

answer pls friends measurement

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meenakshi997sa: o.90cm

sivakeerthu06pajznn: how

Answers

Answered by TooFree

Let the length of the pendulum be x

⇒ The radius is x

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STEP 1: Form the equation for the circumference:

Circumference = 2πr

Since we have defined the radius as x:

Circumference = 2xπ cm

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STEP 2: Form the equation:

Degree/full swing x circumference = length of arc

40/360 x 2xπ = 44

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STEP 3: Solve x:

40/360 x 2xπ = 44

80xπ/360 = 44

80xπ = 15840

x = 15840 ÷ 80π

x = 63 cm

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Answer: The length of the pendulum is 63 cm

TooFree: You are welcome :)

meenakshi997sa: could u plz explain step 2???

TooFree: 40 degree as a fraction of 360.

TooFree: Let me go in and edit and add in more details

meenakshi997sa: thank u for adding a bit of detail.... ☺☺☺☺

meenakshi997sa: thanks... ☺ understood now...

TooFree: I have edited it to include more details .. I hope it helps

meenakshi997sa: ya it did

TooFree: Hmmm .. i think it makes it worse .. I think the original was a better explanation .. hahaha .. let me put it back

meenakshi997sa: the edit was better!!... but its up to u now cause i understood so u can make any change...☺

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