Question

The window of a room is 20 m long and 14 m wide. If the carpenter works to put a
metallic frame around it which cost Rs 120 per meter, then how much will the metallic
frame cost?

Answer 1

Answer:Rs. 33,600

Step-by-step explanation: The window is in the shape of rectangle as the measurements differ.

so,

length= 20 m

breadth = 14m

Area of window = length*breadth

                            =20m * 14m

                            =280 m2

Cost per meter sq = Rs. 120

cost of metallic frame of window = 120 * 280

                                            = Rs. 33,600

Answer 2

Answer:

$p = 2(l + b) \\ 2 \times (20 + 14) \\ 2 \times 34 = 68 \\ 68 \times 120 = 8160$

Step-by-step explanation:

we have to find the perimeter

then multiply with 120 to find the cost..