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
Circle N has a radius of 6 millimeters (mm). Circle M has an area of \( 121π mm^{2} \) . What is the total area, in \( mm^2 \), of circles N and M ?
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周长・面积与平面图形进阶
If the perimeter of an equilateral triangle with a height of 21 is \( a\sqrt{3} \) , what is the value of a?
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周长・面积与平面图形挑战
A rectangular poster has an area of 360 square inches. A copy of the poster is made in which the length and width of the original poster are each increased by 40%. What is the area of the copy, in square inches?
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周长・面积与平面图形进阶
The area of a rectangle is 320 square inches. The length of the rectangle is 80 inches. What is the width, in inches, of this rectangle?
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周长・面积与平面图形进阶
A rectangular region of land is divided into 86 square plots of equal area R, in square units. The length of the region is 21.5 times the width of the region. If the width of the region is \( x\sqrt{R} \) units, what is the value of x?
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周长・面积与平面图形进阶
If the perimeter of an equilateral triangle with a height of 23 is \( a\sqrt{3} \) , what is the value of a?
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周长・面积与平面图形挑战
The area of a triangle is equal to \( x^2 \) square centimeters. The length of the base of the triangle is 2x + 16 centimeters, and the height of the triangle is x - 4 centimeters. What is the value of x?
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周长・面积与平面图形挑战
The area of a triangle is equal to x2 square centimeters.The length of the base of the triangle is 2x ＋16 centimeters, and the height of the triangle is x - 4 centimeters. What is the value of x?
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周长・面积与平面图形挑战
A rectangular fence covers an rectangle area of 40 square plots. Each square plot has an area of \( r \). The length of rectangle area is\( x\sqrt{r} \) , which is 1.6 times of its width. What is the positive value of \( x \)?
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周长・面积与平面图形挑战
The area of a triangle is equal to x2 square centimeters. The length of the base of the triangle is 2x+6 centimeters, and the height of the triangle is x-2 centimeters. What is the value of x?
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周长・面积与平面图形进阶
A space probe uses a square-shaped solar sail to move through space. The side length of the solar sail is 8.83w meters, where w is the width, in meters, of the space probe.Which equation gives the area A, in square meters, of the solar sail?
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周长・面积与平面图形进阶
The length of a rectangle is 20 inches and the width is x inches. The perimeter is at most 100 inches. Which inequality represents this situation?
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