Built-up area
John build-up area 5 x 7 = 35 m2 with building with a wall thickness 30 cm. How many centimeters would he have to subtract from the thickness of the walls that the built-up area fell by 9%?
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- quadratic equation
- inequalities
- arithmetic
- comparing
- planimetrics
- rectangle
- basic functions
- percentages
Units of physical quantities:
Grade of the word problem:
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