Will measures the diameter of a penny as 1.9 cm using the ruler what is the margin of error?
1.5cm to 2.0cm
1.5cm to 2.5cm
1.85cm to 1.95cm
1.90cm to 1.95cm

go on the tube you might find some information there

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.