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How many square centimeters is the cross-sectional area of a rectangular board sawed into four equal pieces with a surface area of 1200 square centimeters more than the original
Six sections have been added
1200 △ 6 = 200 square centimeter
One fourth of a number is 5 less than one third of it. What's the number? (solution of the equation) the bottom of a triangle is x decimeter, the height is 2 / 3 decimeter, and the area is 3
Yes ()
Let this number be X
X/3-X/4=5
X/12=5
X=60
Area = x * 2 / 3 * 1 / 2 = x / 3 square decimeter
The area of a square and a triangle is equal. It is known that the side length of a square is 6 decimeters and the bottom of a triangle is 9 decimeters
The height of a triangle is 8 decimeters
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