The figure shows the dimensions of a wall having a window and a door at a room.
Area of wall to be painted at the rate ₹ 5 sq units. If the total cost charged is ₹ 50, then perimeter of wall is ________.
A10 units
B12 units
C14 units
D7 units
Please explain the answer
Ans 4:
Class : Class 10
Well, for solving this question, you need to have knowledge of solving quadratic equation. I mean it can be solved by factoring and evaluating, but you must have the idea of solving the question, or basically, how to solve such questions