Question

(Help needed ASAP) What is the approximate diagonal distance from one corner of a 3 inch-by-5 inch index card to the opposite corner?

A) 5.6 inches
B) 6 inches
C) 6.2 inches
D) 5.8 inches

Answer 1

Answer: Give me second

Answer 2

D

Pretend to cut the card in half from opposite corner to opposite corner.
Use Pythagorean’s Theorem.
a^2+b^2=c^2
(3)^2+(5)^2=c^2
9+25=c^2
34=c^2
C=approximately 5.8 inches.