Question

the length of rectangle rstu is 21 inches and the width is 11 inches. what is the area of rectangle rstu? what is the perimeter of rectangle rstu? use the given information to complete the worksheet. length of rectangle rstu width of rectangle rstu perimeter of rectangle rstu area of rectangle rstu area formulas: • parallelogram: a = bh • square: a = s² • triangle: a = 1/2 bh • trapezoid a = 1/2 h(b₁ + b₂)

Explanation:

Step1: Recall area formula for rectangle

The area formula for a rectangle is $A = l\times w$, where $l$ is the length and $w$ is the width. Given $l = 21$ inches and $w=11$ inches. So $A=21\times11$.

Step2: Calculate the area

$A = 21\times11=231$ square - inches.

Step3: Recall perimeter formula for rectangle

The perimeter formula for a rectangle is $P = 2(l + w)$. Substitute $l = 21$ inches and $w = 11$ inches into the formula: $P=2(21 + 11)$.

Step4: Calculate the perimeter

First, calculate the sum inside the parentheses: $21+11 = 32$. Then multiply by 2: $P=2\times32 = 64$ inches.

Answer:

Length of Rectangle RSTU: 21 inches
Width of Rectangle RSTU: 11 inches
Perimeter of Rectangle RSTU: 64 inches
Area of Rectangle RSTU: 231 square inches