a flagpole 18 meters high casts a shadow of length 45 meters . if a building under similar conditions casts a shadow of length 70 meters , what is the height of the building ( in meters ) ?
"the height : length ratio will be equal in both cases . 18 / 45 = x / 70 x = 28 the answer is c ."
multiply(70, divide(18, 45))