Answer:
A. 7
Step-by-step explanation:
Apply pythagorean theorem to find the width of the rectangle.
Thus,
[tex] b^2 = c^2 - a^2 [/tex]
Where,
a = 7.1 in
c = 10 in
b = w in
Plug in the values into the equation
[tex] w^2 = 10^2 - 7.1^2 [/tex]
[tex] w^2 = 100 - 50.41 [/tex]
[tex] w^2 = 49.59 [/tex]
[tex] \sqrt{w^2} = \sqrt{49.59} [/tex]
[tex] w = 7 [/tex] (to nearest tenth)
