Area is the size of a two dimensional object; it is the (two dimensional) space inside a region Area is measured by units of area, including metric and US customary units (square inches, yards, centimeters, meters) The area of a rectangle can be found by multiplying length by ...
The adjacent sides of a rectangle are perpendicular, which means they meet at a 90° angle. The opposite sides of a rectangle are equal and parallel, which means they never cross. The area of a rectangle is the length times thewidth. A circle is a 2 dimensional figure with a radius and...
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area: Thearea(面积) of a rectangle is its length times its width.(矩形的面积是其长乘以宽。) volume: Thevolume(体积) of a cube is its length times its width times its height.(立方体的体积是它的长乘以宽乘以高。) Exercises: 1.—Which figure has a radius and a diameter? —A circle ha...
Deserts are areas of land that receive little or no rainfall. The amount of rainfall in some deserts is so low that only a few plants can survive. A valley is low, relatively flat area between hills and mountains, often with a river running through it. ...
A right triangle is a two dimensional figure with 3 sides, two of which are perpendicular. To find its area, multiply the length of the two perpendicular sides, A & B, and divided by two, A equals one half A B.A rectangle is a two dimensional figure with 4 sides P...
The oceans arealso an important source of oxygen. Deserts areareas of land that receive little or no rainfall. The amount ofrainfall in some deserts is so low that only a few plants can survive. A valley is alow, relatively flat area between hills or mountains, often with a riverrunning ...
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The area of a rectangle is the length times the width. 矩形的⾯积是长乘以宽。 A circle is a 2-dimensional figure with a radius and a circumference, which is the distance around the circle. 圆是⼀个有半径和周 长的⼆维图形,周长是绕圆的距离。 The area of a circle is pi r ...