A carpenter is assembling triangular support structures for a deck. The supports need to include a perfect right angle in order to be structurally safe. If the side lengths are 2.75 feet, 15 teet. and 15.25 feet do the structures meet the safety requirements? O A Yes, because 2.752 + 152 = 15.25? Yes, because 2.75 + 15 > 15.25 No, because (2.75 + 15)? 15 252 O D No, because 2.75 + 15 15.25.

Jan is making a poster in the shape of a triangle. She doesn’t have a protractor but measures theside lengths and finds that they are 8 in, 16 in, and 18in. She believes that the poster is a righttriangle, but Jim believes that it is not a right triangle. Who is right? Explain

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A student was trying to calculate the circumference of a circle with a radius of 5 ft. The student’s work is shown below. Which statement is true? Student’s scratch work: C = 2.5(3.14) = 7.85 in.   Group of answer choices   (A.) They calculated the circumference right because C= 7.85 in.   (B.) They did not calculate the circumference right because it should be C = 2(5)(3.14) which would make the circumference 31.4 in.   (C.) They did not calculate the circumference right because it should be C = 5(5)(3.14) which would make the circumference 78.5 in.   (D.) They did not calculate the circumference right because it should be C = 10(10)(3.14) which would make the circumference 314 in.