5.a rectangle has a length of 20 centimeters and a width of 4 centimeters. what is the area of the rectangle?
a. a = 20cm 2
b. a = 28cm 2
c. a = 48cm 2
d. a = 80cm 2

He expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. if the length is fraction 2 over 3 unit and the width is fraction 1 over 3 unit, what is the perimeter of the rectangle in units? fraction 2 over 3 unit 1 unit 1fraction 2 over 3 units 2 units

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

Multiplying fractions by whole number 5 x 1/3=?