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...
The width is 75: W = 75 6250 = L x 75 Almost. Notice that in the original question, the area “is at most 6250 square feet.” This tells us that the units are feet for length and width, and square feet for area. The “at most” part tells ...
A rectangle has a length of 8 cm and a width of 6 cm. To find the area, what should be done first? A. Add the length and width. B. Subtract the length from the width. C. Multiply the length by the width. D. Divide the length by the width. ...
A rectangle has a width that is 11 cm more than twice its length. If the area of the rectangle is 175 square centimeters, find the length and width. The length of a rectangle is 3 cm more than 5 times its width. If the area of th...