5272道题目5525 条题源记录 · 相同内容已合并
周长・面积与平面图形进阶
A polygon with 15 sides has a perimeter of 107 inches. The length of one side is 9 inches. The other 14 sides have equal lengths. What is the length, in inches, of one of the 14 sides with equal lengths?
原库参考解析
周长・面积与平面图形进阶
A rectangle has a perimeter of 48 inches. If the sum of the lengths of three sides of the rectangle is 31 inches, what is the length, in inches, of the fourth side?
原库参考解析
周长・面积与平面图形进阶
In triangle \( ABC \), side\( AC=10 \) cm. The area of triangle \( ABC \) is 250 square centimeters. What is the height h, in centimeters, of this triangle?
参考答案
周长・面积与平面图形进阶
The length of a side of square X is 8 centimeters. The area of rectangle Y is 45 square centimeters. What is the total area, in square centimeters, of square X and rectangle Y?
参考答案
周长・面积与平面图形进阶
The equation \( 66=2x+2y \) gives the perimeter of a rectangular garden that has length x, in feet, and width y, in feet. The width of the garden is 8 feet. What is the length, in feet, of the garden?
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周长・面积与平面图形进阶
Square A has side lengths that are 72 times the side lengths of square B. The area of square A is k times the area of square B. What is the value of k?
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周长・面积与平面图形进阶
The length of each side of a square is 68 inches. Which expression gives the area of the square?
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周长・面积与平面图形进阶
The area of a rectangle is 70 square inches. The length of the longest side of the rectangle is 14 inches. What is the length, in inches, of the shortest side of this rectangle?
参考答案
周长・面积与平面图形挑战
The figure shows a rectangular pool surrounded by a concrete path that is x feet (ft) wide on all sides. The pool is 21 ft long and 11 ft wide. The area of the concrete path is 144 ft2. What is the value of x?
参考答案
周长・面积与平面图形进阶
The area of a rectangle is 105 square inches. The length of the longest side of the rectangle is 15 inches. What is the length, in inches, of the shortest side of this rectangle?
参考答案
周长・面积与平面图形挑战
The expression \( k·cosx^{∘} \) represents the area of triangle ABC shown. What is the value of k?
参考答案
周长・面积与平面图形挑战
The expression \( 26+k·cosx^{∘} \) represents the perimeter of triangle ABC shown. What is the value of k?
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