Which would you measure using inches? height of a flagpole
length of a driveway
length of a cross-country race course
length of a pen

Length of a pen

Step-by-step explanation:

Because it is comparatively smallest than other,

and we use inches method to measure smaller length.

x+y=90

x=30-y=x

step-by-step explanation:

if you understand you will get the answer

answer: a

step-by-step explanation:

10.2 units