Question

A square has an area of 16 cm². Calculate the length of its diagonal to the nearest 10th of a centimeter. Page 411 will be helpful after you find the length of the side of the square.

a. 6.4 cm

b. 5.7 cm

c. 8 cm

d. 4 centimeters

e. 64 cm

Answer 1

If the area is 16, each side is 4. Use the pathogen theorem 4^2+4^2=diagonal^2. Works out to about 5.7.

Answer 2

4sqrt2 =4*1,41 =5,64
than b.is right

Answer 3

You can calculate the diagonal with pythagoras:

\[\sqrt{(4^2 + 4^2)} = \sqrt{32} \approx 5.7\]