Question

How many square centimeters of cardboard are needed to make a rectangular
box 10 cm long, 7 cm wide and 5 cm high?​

Answer 1

Answer:

TSA of cuboid=lenght×breadth× height

=10×7×5

=350cm²

Step-by-step explanation:

hope it helps you.....

Answer 2

Answer:

TSA of a cuboid = 310$cm^{2}$

Step-by-step explanation:

In a box, all sides needed to be cardboard.

So we have to find the TOTAL SURFACE AREA of cuboidal box in order to find how many $cm^{2}$is needed.

TSA of a cuboid = 2(lb+bh+hl)

TSA of a cuboid = 2(10×7+7×5+10×5)

TSA of a cuboid = 2(70+35+50)

TSA of a cuboid = 2 (120+35)

TSA of a cuboid = 2×155

TSA of a cuboid = 310$cm^{2}$

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