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Saaransh Goswami

· started a discussion

· 1 Months ago

why? (Question: 273529.0 )

how can you apply formula of equilateral triangle.

Question:

Two circles having same radius 8 cm and centre P and Q. Both circle crosses centre to another. How much the common area of both circle is less than the summation of  13   rd of their area of circles.

Options:
A)

163    cm2

B)

643    cm2

C)

323    cm2

D)

643    cm2

Solution:

Ans: (c)

  

Ambarish Gupta

· commented

· 1 Months ago

sorry..multiplied by 1/2 as well..

Ambarish Gupta

· commented

· 1 Months ago

no need to apply equilateral formula ...just use ab sin thetha where theta is equal to 120
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