Question

20. If the length and breadth of a rectangle are 4a meters and 6a meters respectively
What is its perimeter?​

Answer 1

Answer:

$length(l) = 4a \: m$

$breadth(b) = 6a \: m$

$perimeter = 2(l + b)$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2(4a + 6a) \: m$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = (2 \times 10a) \: m$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 20a \: m$