Kyleigh put a rectangular sticker on her notebook. the hiegth of the sticker measures 18cm. the base is half as long as the height. what is the area of the notebook does the sticker cover

Geometry. i need step by step explanation on how to do each problem.

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Which statements regarding efg are true? check all that apply.