Question

The measurements of an cuboidal oil box are 30 cm, 40 cm and 50 cm respectively. The cost of the tin sheet used in making the box is Rs. 10 per m2. find the cost of the tin required to make 20 such boxes? Fast answer please

Answer 1

Answer:

Step-by-step explanation:

dimension of cuboidal tin = 30cm×40cm×50cm

let length = 40cm

breath = 30cm

height = 50cm

Total surface area = 2(lb+bh+lh)

                          = 2(40×30 + 30×50 + 40×50)

                          = 2(1200 + 1500 + 2000)

                          = 2(4700)

                          = 9400 cm²

TSA of one tin box = 9400 cm²

TSA of 20 tin boxes = 9400×20 = 18800 cm² = 1.88m²

Cost of tin = Rs. 10/m²

Total cost = 1.88×10 =Rs. 18.8