On the blueprint of a house, 28 millimeters represents 6 meters. the actual length of the living room is 9 meters. what is its length on the blueprint?

Find the arc length parameter along the given curve from the point where tequals=0 by evaluating the integral s(t)equals=integral from 0 to t startabsolutevalue bold v left parenthesis tau right parenthesis endabsolutevalue d tau∫0tv(τ) dτ. then find the length of the indicated portion of the curve r(t)equals=1010cosine tcost iplus+1010sine tsint jplus+88t k, where 0less than or equals≤tless than or equals≤startfraction pi over 3 endfraction π 3.

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

How to do this , and can some one explain