5272道题目5525 条题源记录 · 相同内容已合并
周长・面积与平面图形挑战
A circle has a radius of 19 meters. What is the area, in square meters, of the circle?
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周长・面积与平面图形挑战
Circle N has a radius of 6 millimeters (mm). Circle M has an area of 121π mm². What is the total area, in mm², of circles N and M ?
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周长・面积与平面图形进阶
A circle has a circumference of 89π centimeters. What is the diameter, in centimeters, of the circle?
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周长・面积与平面图形进阶
The area A, in square centimeters, of a rectangular painting can be represented by the expression \( w(w+79) \), where w is the width, in centimeters, of the painting. Which expression represents the length, in centimeters, of the painting?
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周长・面积与平面图形进阶
\( h\left(x\right)=\frac{1}{2}\left(x\right)\left(89\right) \)
The given function \( h \) represents the area, in square inches, of a triangle with a base of \( x \) inches and a fixed height. What is the height, in inches, of the triangle?
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周长・面积与平面图形进阶
The triangle shown has one side with a length of x inches and two sides each with a length of y inches. The perimeter of the triangle is 69 inches. Which equation represents this situation?
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周长・面积与平面图形挑战
Rectangle X has a length of 24 millimeters (mm) and a width of 17.5 mm. Right triangle Y has a base of 20 mm. The area of rectangle X is 3 times the area of right triangle Y. What is the height, in mm, of right triangle Y?
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周长・面积与平面图形进阶
The width of a rectangle is 9 centimeters. The length of the rectangle is 50 centimeters longer than the width. What is the area, in square centimeters, of this rectangle?
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周长・面积与平面图形进阶
The width of a rectangle is 9 centimeters. The length of the rectangle is 50 centimeters longer than the width. What is the area, in square centimeters, of this rectangle?
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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?
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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 144ft². What is the value of x?
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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 \( k \)?
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