Question

What happens to the area of a rectangle when
9. What happens to the
(1) its length is doubled, the breadth remai
the same?
its breadth is doubled, the length remaining
the same?
(iii) its length and breadth are both doubled?​

Answer 1

Step-by-step explanation:

Area of a rectangle is product of it's length and breadth

L * B = A. ..... A is area

now according to (1) when length is doubled

Multiply both sides by 2

(2L) * B = 2A. AREA will become twice the original

This can also be written as

L *(2B) = 2A. THIS is the answer of second part

NOW, Length and breadth, both are doubled

(2L) * (2B) = 4A. AREA will become 4 times the original