MathematicsEasy249×since 2002Q2552Distance between two parallel planes 2x+y+2z=82x+y+2z=82x+y+2z=8 and 4x+2y+4z+5=04x+2y+4z+5=04x+2y+4z+5=0 is :A32{3 \over 2}23B52{5 \over 2}25C72{7 \over 2}27D92{9 \over 2}29Check answerSkip