Go to khanacademy.com and there's a lot of instructional tutorials that show you step by step tutorials
I think it is the first one
The answer is 12
Step 1. Perform the operations inside the parenthesis:
(4 + 9) − 3(6) ÷ 2 + 8 = 13 - 18 ÷ 2 + 8
Step 2. Division has advantage over subtraction and addition:
13 - 18 ÷ 2 + 8 = 13 - 9 + 8
Step 3. Subtract and add:
13 - 9 + 8 = 12
Step-by-step explanation:
Area =144m
2
Length =16m
Breadth=
16
144
=9m
Perimeter =2(l+b)
=2(16+9)
=2(25)=50m
Cost =6×50=300Rs.
