Question

the area of cardboard to make a box of size 25 CM × 15 cm ×8 cm will be

Answer 1

TSA of cardboard
=2(25 x 15 + 15 x 8 + 8 x 25)
= 2( 375 + 120 + 200)
= 2x 695
= 1390 cm sq.

Answer 2

Answer:

The area of the cardboard is 1390 centimeter square.

Step-by-step explanation:

Given : A box of size 25 CM × 15 cm ×8 cm

To find : The area of cardboard to make a box?

Solution :

The formula of area of the cardboard is

$A=2(lb+bh+hl)$

Where, l is the length l=25 cm

b is the breadth l=15 cm

h is the height h=8 cm

Substitute in the formula,

$A=2(25\times 15 + 15\times 8 + 8\times 25)$

$A=2(375+120+200)$

$A=2(695)$

$A=1390 cm^2$

Therefore, The area of the cardboard is 1390 centimeter square.