a flagpole 18 meters high casts a shadow of length 45 meters . if a building under similar conditions casts a shadow of length 55 meters , what is the height of the building ( in meters ) ?
"the height : length ratio will be equal in both cases . 18 / 45 = x / 55 x = 22 the answer is b ."
multiply(55, divide(18, 45))