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Ashwini M

· started a discussion

· 1 Months ago

no explanation at all (Question: 259974.0 )

how did u get length and breadth 7,8 explain..i regret buying this test series

Question:

Two circles  C1    and  C2    having the same radius of 2 cm and centres at A and B respectively, intersect each other such that the line of centres AB intersect  C1    and  C2    at F and E respectively, EF = 1 cm. The whole setup is enclosed in a rectangle of minimum area. The ratio of perimeter and area of rectangle is –

Options:
A)

11 : 7

B)

11 : 14

C)

14 : 11

D)

7 : 22

Solution:

Ans: (b)

  

Knowledge Expert

· commented

· 1 Months ago

Dear student
According to solution
We know the radius of circle is 2cm
So, we observe the diameter is 4cm
2 circle = 2 x 4 = 8
given EF 1cm
length of rectangle = 8 - 1 = 7
beadth of rectangle = diameter of circle
and follow the answer

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