Question

the total surface area of a closed cardboard of 8 meter, 3meter and 4 meter. find the total surface area.

guys I just need one help from you please do step by step method to understand the method.
please do not give direct answer.
I hope you all understood ​

Answer 1

Step-by-step explanation:

total surface area formula is

2 × ( length × breadth + breadth × height + height × length )

2 × ( 8×3 + 3×4 + 4×8 )

= 2×(24+12+32)

2×(68)

=

${136m}^{2}$

Answer 2

Answer:

Easy peasy!

Step-by-step explanation:

• Surface area = 2(lw + lh + hw)
• = 2(8×3 + 8×4 + 3×4) meter^2
• = 2(24 + 40 + 12) meter^2
• = 2(76) meter^2
• = 152 meter^2