Hey there! I'm happy to help!
In geometry, a polygon with all equal sides is called an equilateral polygon. You can see the words equal and lateral in that word. Lateral has to do with sides, so the word equilateral literally means "equal sides". How cool!
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Answer:
The length of the pendulum is 14.13 meters.
Step-by-step explanation:
The length of a pendulum is given by the formula,
, where T is the times period and L is the length of the pendulum.
Now, given that T = 2.4π seconds.
So, from the above equation, we get,

⇒ 
⇒
{We have the value of g as 9.81 m/sec²}
⇒ L = 1.44 × 9.81 = 14.13 meters. (Approx.)
Therefore, the length of the pendulum is 14.13 meters. (Answer)
Answer: For a is 19/15 or 1 4/15
for b I have no clue
Step-by-step explanation: add 3/5 and 2/3
you will get 19/15. In mixed fraction is 1 4/15
7/2,14/4,21/6,28/8,35/10,42/12,49/14,56/16,63/18,70/20