B。解析:文章中明确提到“The perimeter of a rectangle is the total length of all its sides. To find the perimeter of a rectangle, we add up the lengths of all four sides. Since opposite sides of a rectangle are equal, the perimeter can be calculated as follows: P = 2(length + width...
32+2uLet: l=u+7 w=9 The formula for the perimeter of a rectangle is P=2(l+w). Substitute the values of l and w into the formula below: P =2(l+w) P =2((u+7)+9) P =2(u+7+9) P =2(u+16) P =2u+32 P =32+2u The perimeter of the rectangle is 32 + 2u. 反馈...
or, perimeter of the rectangle = 2(l+b), This is the formula for the perimeter of a rectangle.Answer and Explanation: Let x be the width of the rectangle, As given, the length of the rectangle is fixed at 27 cm, so the perimeter of the rec...
Perimeter of a Rectangle:The formula for the perimeter of a rectangle of length l and width w is: Perimeter =2l+2w If we know the length and width of a rectangle in terms of a variable and its perimeter is given then we can subs...
Perimeter of a Rectangle The perimeter of a rectangle is the sum of the length of its four sides. Let’s find the formula for the perimeter of a rectangle. Perimeter of a rectangle = length + width + length + width = 2 × length + 2 × width = 2 (length + width) Since, we...
解析:The correct answer is J. To find the length of fence needed to fence a rectangular lot 150 ft by 200 ft, you need to find the perimeter. The formula for the perimeter of a rectangle is 2 times the sum of the length and width, or P = 2( l+ w). 2(150 +200) =2(350)...
There is a rectangle. The length is 8 cm and the width is 4 cm. What is the perimeter of the rectangle? A. 12 cm B. 24 cm C. 32 cm D. 16 cm 相关知识点: 试题来源: 解析 B。本题考查长方形的周长计算。长方形周长 = (长 + 宽)× 2,即(8 + 4)× 2 = 24(cm)。选项 A ...
In a rectangle, the sum of the two sets of opposite lengths will give the perimeter of a rectangle. Also calculating the two-dimensional space occupied by shape is known as area. For the rectangle, we have to multiply the length and width to fin...
Rectangle:Rectangle is a 2-D figure or parallelogram, having 4 sides and 4 corners. The formula perimeter of a rectangle is written as {eq}P = 2L + 2W {/eq} Where, P is the perimeter of rectangle L is the length of recta...
As you begin calculating areas, you may notice that you need some of the same components that perimeter formulas call for, such as length and width. So, what is the area formula for a rectangle, a triangle and a circle? Learn how to calculate the area for each using the area formulas ...