You need to find the mass and the volume first to be able to figure out the density
That’s all it is not really understanding
Sin=90 and cos=90 okurwelcome
Answer:

Step-by-step explanation:
Two points are (0, 65) and (10, 55)
Calculate slope <em>m</em>


Use slope-intercept form


<em>b</em> is the y-intercept, y-intercept is (0,65)

Can’t figure out the b but maybe using my diagram above it can help you solve B. Just make sure to remember that for B the base is a triangle