To find the maximum length and the width of the rectangle we will write the expression for the perimeter of the rectangle and then we will find the width from it and put it in the area formula and then differentiate. Answer and Expla...
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 ...
For example, if a rectangle has an area of 20 square feet and a length of 10 feet, divide 20 by 10 to get a width of 2 feet. Step 2 Multiply the length times 2 and subtract this figure from the perimeter, if you're given these values. Then divide by 2 to find the width. (...
B. Subtract the length from the width. C. Multiply the length by the width. D. Divide the length by the width. 相关知识点: 试题来源: 解析 C。本题考查求长方形面积的步骤。长方形面积等于长乘以宽,所以首先应该把长和宽相乘。选项 A 是把长和宽相加,不符合;选项 B 是用宽减去长,不符...
Step 2: Label the length and width of each rectangle. ↓Step 3: Find the area of each rectangle.↓Step 4: Find the sum of all the areasAnswer the questions. Refer to the six-sided polygon above.What is the area of rectangle B?
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 of the rectangle.Only an algebraic solution will be accepted.Follow • 2 Add comment 1 Exp...
Find the area of rectangle whose length is 25cm and width is 5cm. 01:33 The area of a square and a rectangle are equal. If the side of the sq... 01:54 The area of a square and a rectangle are equal.If the side of the squa... 03:21 Find the area of a rectangle, whose Le...
How to Find Area of a Rectangle A rectangle is a polygon with four straight sides and four interior right angles. Unlike a square, a rectangle’s adjacent sides have different lengths, but the opposing sides are equal. Thearea of a rectangleis equal to the length times the width. ...
A rectangle has perimeter 44 cm.Find its area if its length is 5cm less than twice its width.相关知识点: 试题来源: 解析 perimeter 44 cm,length is 5cm less than twice its widthso,length+width=22length+5=2*widthso,length=13cm,width=9cmarea=length*width=13*9=117cm^2...
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.