Question

A saree is 5m long and 1.3m wide. A border of width 25 cm is printed along its sides. Find the cost of printing the border at Rs 1 per 10 cm 2

Answer 1

l=500cm
w=130cm
now the area of entire saree is A= 500*130=65000 cm²
now to find the area of the border, we should subtract the area of the middle of the saree from the whole area. Firstly, let's find the area of the middle part of saree,  where length= 500- 25 - 25 =450 cm and width= 130 - [25*2] = 80cm.
so, the area of the middle part = B = 450*80 = 36000 cm²

that means, the area of the border of the sari is A-B= 65000-36000=29000cm²
now the cost is Rs.1 per 10 cm², which means for 29000 cm² it is...
➣ 29000/10 = 2900 Rs.

Hope it helped you

Answer 2

$\huge \purple {AnsWer}$

Length = 5m

Breath = 1.3m

Area ( Outer ) = L × B

⠀⠀⠀⠀⠀⠀⠀⠀⠀= 5 × 1.3 = 6.5m²

⠀⠀⠀⠀⠀⠀⠀⠀⠀= 6.5 × 100 × 100

⠀⠀⠀⠀⠀⠀⠀⠀⠀= 65000 m.

⠀⠀⠀⠀⠀⠀⠀⠀⠀

Area of inner = L × B

⠀⠀⠀Length ( I ) = 5 - 50 = 4.50 × 100

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 450 cm.

⠀⠀⠀Breadth ( I ) = 1.3 - 50 = 80 × 100

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 80 cm.

⠀⠀⠀⠀⠀⠀⠀⠀⠀

A = L × B = 450 × 8

⠀⠀⠀⠀⠀⠀= 36000.

⠀⠀⠀⠀⠀⠀⠀⠀⠀

Area of Border = Outer area - Inner area

⠀⠀⠀⠀⠀⠀⠀⠀⠀ = 65000 - 36000

⠀⠀⠀⠀⠀⠀⠀⠀⠀= 29000 cm².

Total cost = Area × Cost per cm²

⠀⠀⠀⠀⠀⠀⠀$= 29000 \times \frac{1}{2}$

⠀⠀⠀⠀⠀⠀⠀= ₹2900 ..