Question

what is the missing length? area = 63 cm² 7 cm u = centimeters

Explanation:

Step1: Recall rectangle area formula

The area of a rectangle is $A = l \times w$, where $A$ is area, $l$ is length, $w$ is width.

Step2: Rearrange to solve for $u$

Isolate $u$: $u = \frac{A}{w}$

Step3: Substitute given values

Substitute $A=63$ cm², $w=7$ cm:
$u = \frac{63}{7}$

Step4: Calculate the value

$u = 9$

Answer:

9 centimeters