Question

a closed metallic cylindrical box is 1.25 m high and its base radius is 35 cm if the sheet metal cost Rs 80 per metre square the cost of the material used in the boxes

Answer 1

given : height of the cylinder = 1.25m.
radis of its base = 35 cm.
sheet metal cost per metre square = 80
to find : cost of the material used = ?
solution : it is provided to you as a image.

Answer 2

The cost of the material used in the boxes is Rs.281.6

Step-by-step explanation:

Height of cylinder = 1.25 m

Radius of cylinder = 35 cm = 0.35 m

Total surface area of cylinder = $2 \pi r h + 2 \pi r^2 = 2 \times \frac{22}{7} \times 0.35 \times 1.25 + 2 \times \frac{22}{7} \times (0.35)^2=3.52 m^2$

Cost of 1 sq.m. = Rs.80

Cost of 3.52 sq.m. =$80 \times 3.52 = rs.281.6$

Hence the cost of the material used in the boxes is Rs.281.6

#Learn more:

Closed metallic cylindrical box is 1.5 m high and it has a base whose diameter is 70 cm if the sheet of metal cost rupees 70 per square metre find the cost of the material used in the box

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