For blank 1, i need the perimeter of the composite figure.

for blank 2, i need the surface area of the composite figure.

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

How do you write something in scientific notation?

Me n o w. i need t h i s. 10 points