Question

A rectangular room has length(3a + 2b)m and breadth (3a - 2b)m.
i)
सो कोनको क्षेत्रफल निकाल्नुहोस।
Find the area of the room.​

Answer 1

Answer:

9a^2 -4b^2 sq m

Step-by-step explanation:

Area of rectangle=Length×Breadth

=(3a+2b)×(3a-2b)

=9a^2+4b^2

we know

a^2-b^2=(a+b)(a-b)