Area and Perimeter of Triangles

Question 1

Area = (base)(height)

Revolt · Accepted Answer

✔ h/c; sin(B) = , so: h/c; h = , and: csin(B); Area =: 1/2acsin(B)

Question 2

asin(C)bsin(A)✔ csin(B)

Revolt · Accepted Answer

✔ csin(B)

Question 3

1/2absin(B)✔ 1/2acsin(B)1/2bcsin(D)1/2ahsin(B)

Revolt · Accepted Answer

✔ 1/2acsin(B)

Question 4

✔ 13.514.0X 27.028.0

Revolt · Accepted Answer

✔ 13.5

Question 5

Area = (base)(height)

Revolt · Accepted Answer

The bottom side of the flag measures 5 feet because the triangle is . Because , the trigonometric triangle formula is used to calculate that the area is (5)(5)sin(36°) ≈ 7.35 square feet. Recalling th: an isosceles triange; The bottom side of the flag measures 5 feet because the triangle is . Because , the trigonometric triangle formula is used to calculate that the area is (5)(5)sin(36°) ≈ 7.35 square feet. Recalling th: SAS information is known; = (x)(5)sin().: 7.35; = (x)(5)sin().: 72°; Solving for x and adding this value to the length of the other sides, the perimeter ≈ (rounded to the nearest tenth).: 13.1 ft

Question 6

the triangle is an isosceles triangleX the triangle is a right triangle✔ SAS information is knownthe base and height are known

Revolt · Accepted Answer

✔ SAS information is known

Question 7

5✔ 7.3536°72°

Revolt · Accepted Answer

✔ 7.35

Question 8

57.3536°✔ 72°

Revolt · Accepted Answer

✔ 72°

Question 9

12.1 ft✔ 13.1 ft13.4 ft15.0 ft

Revolt · Accepted Answer

✔ 13.1 ft

Area and Perimeter of Triangles Answers

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