Question

The area of the cardboard needed to make a box of size 25 cm * 15cm * 8cm will be?

Answer 1

Answer:

Area needed for making can be calculated by calculating the Total Surface area of the Cardboard box.

Here the given dimensions are:

Length = 25 cm, Breadth = 15 cm, Height = 8 cm

So TSA of cube = 2 ( lb + bh + hl )

⇒ 2 ( 25 × 15 + 15 × 8 + 8 × 25 )

⇒ 2 ( 375 + 120 + 200 )

⇒ 2 ( 695 )

⇒ 1390 cm²

Hence 1390 cm² of cardboard is needed for making the cardboard box.

Answer 2

Answer:

1390 cm²

Step-by-step explanation:

The given dimensions are :-

length = 25cm , Breadth = 15 cm , Height = 8 cm

So ,the total surface area (TSA) of cube=2(lb+bh+ hl)

= 2( 25x15 + 15x8 + 8x25)

= 2 ( 375 + 120 + 200 )

= 2 x 695

= 1390 cm²

Hence , Area of cardboard needed = 1390 cm²