Find the length and width of a rectangle that has the perimeter of60mand a maximum area. Second Derivative Test: Let f be a function defined on an interval I and c is any real number in the interval. Let f be twice differentiable at c. Then ...
(Suppose the width of the rectangle is X cm, the length of the rectangle is (2X+3)cm.) 2[X+(2X+3)]=84 3X+3=42 3X=39 X=13 2X+3=29所以长方形的宽是13厘米,长是29厘米. (Therefore the width of the rectangle is 13 cm, the length of the rectangle is (2X+3)cm.)...
Find the length and width of a rectangle whose perimeter is 42 feet and whose area is 90 square feet. Rectangle : A rectangle is a geometric figure with four sides (quadrilateral); each pair of opposite sides are parallel and equal. The sum of these cut ...
To find the are a of a rectangle, multiply the length and width. A =L × W To find the perimeter of a rectangle, add the lengths of sides together. P=2(L +W)7 mm1)号Area=Perimeter =4 mm2)Area=Perimeter = 相关知识点: 试题来源: 解析 1)14 sqmm 18 mm 2)12 sqmm 14 mmpi...
A rectangle is a geometric shape that is a type of quadrilateral. This four-sided polygon has four angles, with each equaling 90 degrees. You may be required to find the area or width of a rectangle as an assignment in a math or geometry class. Knowing h
代数应用题!In the figure,the length and the width of a rectangle are 5 cm and y cm respectively.Find the area and the perimeter of the rectangle.
Length of rectangle Width of rectangle a 21mm 28mm b 5.8cm 4.3cm c 24.6m 15.7m d 156km 89km 相关知识点: 试题来源: 解析 a. 35mm b. 7.22cm c. 29.12m d. 179.58km 矩形的对角线长度可以通过勾股定理计算,即对角线长度等于长和宽的平方和的平方根。 根据此公式,我们可以计算出每个矩形的对角线...
Search Find an Online Tutor Now Ask a Question For Free Login Geometry Asked • 10/04/18 a rectangle has a length of (x+5) units, a width of (x-3) units and an area of 48 units squared. Find the length and width o...
试题来源: 解析 【解析】 $$ \frac { 1 } { 2 } l - a $$ 结果一 题目 Th eperimete ro f arectangl eis/ ,an dit slengt hi s a 。Fin dit swidth. 答案 1-a相关推荐 1Th eperimete ro f arectangl eis/ ,an dit slengt hi s a 。Fin dit swidth....
Answer to: The area of a rectangular field is equal to 300 m^2. Its perimeter is equal to 70 m. Find the length and width of this rectangle. By...