Question

We can use a to measure curved length
a) scale
b) measuring tape
c) thread
d) all of these ​

Answer 1

Measuring tape or thread is used to measure curved length.

Answer 2

Thread is the answer !

Explanation:

A curved line, also called an "arc," represents a portion of a circle. It is difficult to measure a curve with a straight-edged ruler with any kind of accuracy, but geometry provides a relatively simple way to calculate the length of an arc. You'll need a tool called a protractor and some basic information.

A curved line or surface cannot be measured by a straight scale, a measuring tape or thread must be used instead.To measure a curved line using a thread, follow the below steps: Make a knot at the end of the line. Now, straighten the thread and measure the length of the two knots on a scale.