Question

the sum of angles of a polygon is 7560 how many sides does it have​

Answer 1

Answer:

Question :-

Assertion : Colour of Copper Sulphate does not change when Iron nail is dipped into it.

Reason : Iron is more reactive than Copper Sulphate and it displaces it.

a) Both Assertion and reason are true and reason is the correct explanation of assertion.

b) Both Assertion and reason are true but reason is not the correct explanation of assertion.

c) Assertion is true and reason is false

d) Assertion is false and reason is true

Required Answer :-

When Iron nail is dipped into the copper sulphate solution. Reaction between Copper sulphate solutipn and iron takes place. In this reaction iron is capable of displacing copper from copper sulphate solution , since it is more reactive compared to the copper. This reaction also results in the change of colour of the solution. \begin{gathered}\\\end{gathered}

Now , Observing Both assertion and reason we can conclude that Assertion is incorrect and reason is true.So , Option(d) is the answer.

Answer 2

Answer:

If the polygon has n sides, the sum of its interior angles is 180*(n - 2) degrees.

180*(n - 2) = 7560

(n - 2) = 7560/180 = 42

n = 42 + 2 = 44 sides