Math, asked by wardahd1234, 10 months ago

Any maths geniuses?

QUESTIONS:

1) The radius of the semi circular garden is 35m. One has to walk ..........m to make a trip along its boundary.

2) The length of the minor arc of a circle with radius 6 cm is ......... .

3) A minute hand subtends angle of measure .......... at the centre in 10 minutes duration.

=> please don't spam
=> give full solutions.

Answers

Answered by iAmAlwaysAlone

1)

Perimeter of the boundary= πr+2r = 22/7×35+ 2×35= 180m

2)

question not fully given(conditions)(give the value of angle)

3) In 360° there is 60 minutes...

So in 10 minutes, =(10/60)×360= 60°

helpinghands22: It's me

helpinghands22: this is my new account

wardahd1234: ok

helpinghands22: why u asked so?

helpinghands22: got any motivation?

helpinghands22: for me?

helpinghands22: XD

wardahd1234: Well you should not write that. life is precious.

wardahd1234: please don't give up, because we desperately need you.

helpinghands22: ☺️♥️

Answered by ChiragS1931

1) r=35
boundary=πr+2r=22/7.35+35.2=110+70=180m
2)you didn't give angle.
3)in 60 mins it covers 360°
so in 10 it will cover 360/60*10=60°

wardahd1234: sorry but the question is complete.

iAmAlwaysAlone: pls give the angle

iAmAlwaysAlone: without giving the angle or area u can't calculate the length

ChiragS1931: the angle must be given. you can see urself if angle is 90° then ark will be smaller if central angle is 120° the arc will be larger

wardahd1234: no but the question is complete. it's the same way given in my book

iAmAlwaysAlone: If there is angle, then u can apply this simple formula, angle=arc length/radius

iAmAlwaysAlone: where angle is in radian

wardahd1234: OK thanks

Previous Question

Next Question