The area of a square with sides of length 7 mm: 7 millimeters times 7 millimeters are 49 square millimeters.
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The formula for what? Its perimeter, area, diagonal, etc.
A cube with side of length 1 cm is the same as a cube with sides of length 10 mm (as there are 10 mm in 1 cm). So the the area of one face of this cube would be 10 mm x 10 mm which equals 100 mm squared. There are 6 faces to the cube so 6 x 100 mm squared = 600 mm squared.
24 divided by 4 sides is 6mm 6 times 6 is 36 36 mm
In ratios, the ratios of areas is the square of the ratio of sides. Consider the original circle and the new larger circle formed by multiplying its radius (length) by 3: The circles have lengths in the ratio 1 : 3 → the circle have areas in the ratio 1² : 3² = 1 : 9 → The larger circle's area is 9 × 120 mm² = 1080 mm²
1350 mm squared