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平面几何   题数:126
The perimeter of a certain isosceles right triangle is 16+16√2 . What is the length of the hypotenuse of the triangle?
【OG20-P147-8题】(12 -13 )+(13 -14 )+(14 -15 )+(15 -16 )=
In the figure above, the radius of the circle with center O is 1 and BC = 1. What is the area of triangular region ABC ?
If the two regions above have the same area, what is the ratio t : s ?
【OG20-P146-3题】During a trip that they took together ,Carmen ,Juan ,Maria ,and Rafael drove an average (arithmetic mean )of 80 miles each. Carmen drove 72 miles ,Juan drove 78 miles ,and Maria drove 83 miles .How may miles did Rafael drive ?
【OG20-P146-1题】​In the figure, the 6 small squares are identical, each with sides of length 1. What is the outer perimeter(shown in bold)of the entire figure?
The sides of a square region, measured to the nearest centimeter, are 6 centimeters long. The least possible value of the actual area of the square region is
The diameter of circle S is equal in length to a side of a certain square. The diameter of circle T is equal in length to a diagonal of the same square. The area of circle T is how many times the area of circle S ?
The circle shown has center O and radius 4. What is the area of the shaded region?
Greg assembles units of a certain product at a factory . Each day he is paid $2.00 per unit for the first 40 units that he assembles and $2.50 for each additional unit that he assembles that day . If Greg assembled at least 30 units on each of two days and was paid a total of $180.00 for assembling units on the two days, what is the greatest possible number of units that he could have assembled on one of the two days ?
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