518,400
step-by-step explanation:
the area is multiplying all the given measurements together.
40 * 18 * 30 * 24 = 518,400
hello :
70y^8 + 30y^6 = 2 ( 35 y^8 + 15y^6)
the lenght is : 35 y^8
the width is : 15y^6