Question

An iron box of 1 metre length 80 CM breadth and 65 CM deep is to be made if the box is open at the top find the area of the iron sheet required to make the box and the cost of iron sheet at the rate of rupees 37.50 per square metre

Answer 1

Answer:

Area of Iron sheet required = 3.19m²

Step-by-step explanation:

Length of box = l = 1m

Breadth of box = b = 80 cm = 0.8m

Height of box = h = 65cm = 0.65m

Area of bottom part = lb = 1 * 0.8 = 0.8m²

Area of long vertical part = lh = 1 * 0.65 = 0.65m²

Area of short vertical part = bh = 0.8 * 0.65 = 0.52m²

Given the box is open at the top , so

Total area of box = Area of bottom part

+ 2 ( Area of long vertical part )

+ 2 ( Area of short vertical part )

= 0.85 + 2 ( 0.65 ) + 2 ( 0.52 )

= 0.85 + 1.3 + 1.04

= 3.19m²

Given cost of Iron sheet per m² = rs. 37.50

Total cost of Iron sheet to prepare box = 3.19 * 37.50

= Rs. 119.6250