4 years ago

What formula is used to find the circumference of a circle? isn't it C = 2πr ?

Mathematics

2 answers:

cestrela7 [59]4 years ago

8 0

Yes it is area is pie r^2

Vinil7 [7]4 years ago

4 0

Yes. You are right C=2 \pi r

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What sum of money amounts to rupees 8700 in 3 years at the rate of 24 % per annum

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Given:

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To find:

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Formula for amount:

$A=P\left(1+\dfrac{r}{100}\right)^t$

Where, A is amount, P is principal, r is the rate of interest and t is the number of years.

Putting $A=8700,r=24,t=3$ , we get

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$8700=P\left(1+0.24\right)^{3}$

$8700=P\left(1.24\right)^{3}$

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Divide both sides by 1.906624.

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