Question

Helen is an engineer that designs packages for new products she designed a box in the shape of a rectangle Prism with dimensions of 10 by 7 Inches by 4 inches what is the surface area of the box

Answer 1

Answer: it is 276

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10x7= 70 (Base 1)

10x7= 70 (Base 2)

10x4= 40 (Front)

10x4= 40 (Back)

 7x4= 28 (Side 1)

 7x4= 28 (Side 2)

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  SA= 276

Answer 2

7×4=28×2=56

7×10=70×2=140

4×10=40×2=80

56+140+80=376cm