Question

meetu and anuj had to measure the length of their circular lunch boxes. But they were unable to do so with a scale.
(a) Can you explain where they went wrong.
(b) Give n easy yet accurate method of measuring the length of their circular lunch boxes, with the help of an activity​

Answer 1

You cant measure circumference of circle with linear scale.

b) take a thread and first lunch boxes with thread n then measure the length of three with scale