Box

Cardboard box-shaped quadrangular prism with a rhombic base. Rhombus has a side 5 cm, and one diagonal 8 cm long, and the box's height is 12 cm. The box will open at the top.

How many cm2 of cardboard do we need to cover overlap and joints that are 5% of the area of cardboard?

Correct answer:

S =  277.2 cm2

Step-by-step explanation:

S1=512=60 cm2 s=(5+5+8)/2=9 S2=s(s5)(s5)(s8) S2=9(95)(95)(98)=12  S=(1+5/100)(4S1+2S2) S=1.05(240+24)=277.2 cm2



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