Cardboard box

We want to make a cardboard box shaped quadrangular prism with rhombic base. Rhombus has a side of 5 cm and 8 cm one diagonal long. The height of the box to be 12 cm. The box will be open at the top. How many square centimeters cardboard we need, if we calculate to the overlap and joints need 5% of the cardboard?

Result

S =  277.2 cm2

Solution:

S=1.05 (5 12 4+2 9 (95) (95) (98))=13865=277.2 cm2S=1.05 \cdot \ (5 \cdot \ 12 \cdot \ 4 + 2 \cdot \ \sqrt{ 9 \cdot \ (9-5) \cdot \ (9-5) \cdot \ (9-8) } ) = \frac{ 1386 }{ 5 } = 277.2 \ cm^2







Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




Our percentage calculator will help you quickly calculate various typical tasks with percentages. See also our trigonometric triangle calculator.