Question

15. बस के एक पहिये की त्रिज्या 70 सेमी है। इसे 66 किमी/घण्टा की गति के
लिए कितने चक्कर लगाने होंगे?"
(1) 2500 (2)250 3 ) 1500 (4) 150​

Answer 1

Answer:

(2)250

Step-by-step explanation:

given we know that the radius of the wheel is 70 centimeter

then we also know that the distance is 66km per hour

so according to my formula 66km ÷ circumference of the circle

the circumference of the circle is 2×22÷7×radius

so according to question we know that the radius of the circle is 70 cm

then 2×22÷7×70 then our answer is 440cm

then we do as we know 66km per hour ÷ 440cm as according to the question km is converted into cm so we do multiply with 100000 or by your understanding purpose 10×10×10×10×10 then we do divide just like this

$66 \times 1000000 \div 60 \times 440$

and by solving this our answer will come 250(2)