1 Answer

They Call Me Trinity · Answer 1 · 2023-06-07T06:40:04+0000

According to the problem, the length is 60 cm and the width is 450 mm.

Let's transform 450mm to cm. We know that 1 cm is equivalent to 10 mm. So,

$450\operatorname{mm}*\frac{1\operatorname{cm}}{10\operatorname{mm}}=45\operatorname{cm}$

Then, we use the perimeter formula for rectangles.

Where w = 45 cm and l = 60 cm.

$\begin{gathered} P=2(45\operatorname{cm}+60\operatorname{cm})=2(105cm) \\ P=210\operatorname{cm} \end{gathered}$

The perimeter is 210 centimeters long.

However, we know that 1 meter is equivalent to 100 centimeters.

$P=210\operatorname{cm}\cdot\frac{1m}{100\operatorname{cm}}=2.1m$

Hence, the perimeter, in meters, is 2.1 meters long.

Option A is the answer.