Question

1. area of a rectangle with length 12 cm and width 7 cm: a) 19 cm² b) 84 cm² c) 96 cm² d) 168 cm²

Explanation:

Step1: Recall area formula

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

Step2: Substitute values

Given $l = 12$ cm and $w = 7$ cm, we substitute into the formula: $A=12\times7$.

Step3: Calculate result

$12\times7 = 84$ $cm^{2}$.

Answer:

B. $84$ $cm^{2}$