Cuboid

The volume of the cuboid is 245 cm3. Each cuboid edge length can be expressed by a integer greater than 1 cm. What is the surface area of the cuboid?

Correct result:

S =  238 cm2

Solution:

V=abc=245 245=5⋅ 7⋅ 7=5⋅ 72 a=5 b=7 c=7 S=2⋅ (a⋅ b+b⋅ c+a⋅ c)=2⋅ (5⋅ 7+7⋅ 7+5⋅ 7)=238 cm2

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