What is the length of diagnoal of 7-by-7 square. (round to nearest tenth).
1 answer:
Answer:
9.9
Step-by-step explanation:
We can use the Pythagorean theorem to solve. The legs are both 7 and we are booking for the hypotenuse
a^2 +b^2 = c^2 where a and b are the legs and c is the hypotenuse
7^2+7^2 = c^2
49+49 = c^2
98 =c^2
Taking the square root of each side
sqrt(98) = sqrt(c^2)
9.899494937=c
9.9 = c
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