A square picture frame occupies an area of 112 ft2. What is the length of each side of the picture in simplified radical form?

Respuesta :

A = a^2
112 = a^2
sqrt 112 = a
sqrt 16 * sqrt 7 = a
4 sqrt 7 = a

so 4 sqrt 7 is the length of each side

Answer:

[tex]4\sqrt{7}\ ft[/tex]

Step-by-step explanation:

we know that

The area of a square is equal to

[tex]A=b^{2}[/tex]

where

b is the length side of the square

In this problem we have

[tex]A=112\ ft^{2}[/tex]

substitute in the formula and solve for b

[tex]112=b^{2}[/tex]

Square root both sides

[tex]b=\sqrt{112} \ ft[/tex]

Simplify

[tex]b=\sqrt{2^{4}*7} =4\sqrt{7}\ ft[/tex]