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Tristan and his friends made a banner for their back-to-school dance. The banner is rectangular, and it is $15$ feet wide and $5$ feet tall. $\newline$ Which equation can you use to find the banner's area, $A$ ? $\newline$ Choices: $\newline$ (A) $15 = 5 \times A$ $\newline$ (B) $A = 15 \times 5$ $\newline$ What is the area of the banner? $\newline$ Write your answer as a whole number or decimal. Do not round. $\newline$ ____ square feet

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Area of quadrilaterals and triangles: word problems

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Q. Tristan and his friends made a banner for their back-to-school dance. The banner is rectangular, and it is

15

feet wide and

5

feet tall.

\newline

Which equation can you use to find the banner's area,

A

?

\newline

Choices:

\newline

(A)

15 = 5 \times A

\newline

(B)

A = 15 \times 5

\newline

What is the area of the banner?

\newline

Write your answer as a whole number or decimal. Do not round.

\newline

____ square feet

Identify formula: First, identify the correct formula to calculate the area of a rectangle. The area $A$ of a rectangle is found by multiplying its width $W$ by its height $H$ . The correct equation from the choices given is (B) $A = 15 \times 5$ .
Calculate area: Next, use the formula $A = 15 \times 5$ to calculate the area of the banner. Multiply the width ( $15$ feet) by the height ( $5$ feet). $15 \times 5 = 75$ .

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