Question

find the length of a rectangle whose area is 300 cm and breadth is 15 CM

Answer 1

since area of the rectangle is 300 then
breadth is 15 cm .
length×breadth = 300
length = 300/15 = 20 cm

hope this will help you.
thank you.

Answer 2

area of a rectangle = length × breadth

300 = length × 15

300/15 = length

20 cm = length

length = 20 cm