Kim had to measure a piece of steel pipe for a lab report. When she received the report back, her teacher wrote she had a 10% error on the measurement of the steel pipe, which actually measured 50 cm.
What was Kim's measurement of the steel pipe?
O A. 40 cm
OB. 55 cm
OC. 5 cm
OD. 10 cm

Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle

Having a hard time understanding this question (see attachment).