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Student

A fence is to be erected around a circular field the cost of fencing comes to rupees 2640 @ rupees 12 per metre find the radius of the circular field

Student

Please answer fast

circumference of circle * cost per meter = 2640

2* pi * r * 12 = 2640

r = 2640 / (2*12*pi)

r = 35 meter

Student

My is coming 3.5 how?

Student

Oh sorry it is right

Student

Thank you

okay

any other questions?

Student

A piece of thin wire is in form of an equilateral triangle of side 8.8 DM is bent into a circle with no loss in wire find the diameter of the circle

Student

This one please explain

please send image of complete question

Student
Student

The circled ones

Student

Please tell

okay for 10th question proceed like this

(pi*D)/2 + D = 108

now solve for D

you will get D = 42 cm

Student

Yes

Student

Next one

answer for 12th

Student

Thanks

Student

The last one

for last one

r = 11 cm

so in 1 hour the minute hand will complete 1 circle so calculate circumference

C = 2*pi*r = 2*3.14*11

for 2 hours multiply C by 2

so you'll get C = 138.16 cm

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