A triangle has side lengths of 26 in., 12 in., and 18 in. Is this triangle acute, right or obtuse? Explain your answer.

obtuse

Step-by-step explanation:

12^2+18^2=26^2

144+324=676

468=676

if it was over 676 it would be acute if it equaled 676 it would be a right triangle

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step-by-step explanation:

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²