The street signs in a subdivision are in the shape of semi-circles. What is the area of one street sign with a radius of 8 inches?

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

Need on this one asap im almost done with this subject

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.