Question

The area of a rectangle is the product of width and length. If a rectangle has length 12m the square root of 21 times m and width the square root of 16 times m, which of the following is the area of the rectangle?

Answer 1

from where u have taken this question

Answer 2

i think it is a multiple choice question but the answer is :
L = 12sqrt(21m)
W = 16m
A = L * W = 12sqrt(21m)(16m)=192sqrt(21m^2)

Answer 3

Are these the sides:
\[12m \sqrt{21m}\]and\[\sqrt{16m}\]

Answer 4

\[\text{Area}=\left(12m \sqrt{21 m}\right) \sqrt{16m} =48 \sqrt{21} m^2 \]

Answer 5

Thank you for the medal.