A steel box has dimensions of 2 m, 3 m and 0.5 m. It has to be gold plated using electrolysis. If each square metre of gold plating costs Rs.100, then find the cost of gold plating the outer surface of the box.

Rs.1500

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Rs.1700

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Rs.3000

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Rs.3400

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Solution

The correct option is D
Rs.3400

Total Surface area of cuboid shaped box= 2(lb + bh + lh) = 34 $m^{2}$

Each sq. metre cost Rs. 100

So, Total cost= Rs.100 $\times$ 34 = Rs. 3400

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A steel box has dimensions of 2 m, 3 m and 0.5 m. It has to be gold plated using electrolysis. If each square metre of gold plating costs Rs.100, then find the cost of gold plating the outer surface of the box.

The correct option is D Rs.3400 Total Surface area of cuboid shaped box= 2(lb + bh + lh) = 34 m2 Each sq. metre cost Rs. 100 So, Total cost= Rs.100 × 34 = Rs. 3400

The correct option is D
Rs.3400

Total Surface area of cuboid shaped box= 2(lb + bh + lh) = 34 $m^{2}$

Each sq. metre cost Rs. 100

So, Total cost= Rs.100 $\times$ 34 = Rs. 3400