# Solid cuboid

A solid cuboid has a volume of 40 cm

^{3}. The cuboid has a total surface area of 100 cm squared. One edge of the cuboid has a length of 2 cm. Find the length of a diagonal of the cuboid. Give your answer correct to 3 sig. Fig.## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**algebra**- quadratic equation
- system of equations
**solid geometry**- cuboid
- space diagonal
- surface area
**planimetrics**- Pythagorean theorem
- right triangle
- triangle

### Units of physical quantities:

### Grade of the word problem:

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