Expert answer:Area of Triangles

Answer & Explanation:I need help with areas of triangles.See attached document.Area of Triangles
area_of_triangles.doc

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Area of Triangles
1. Find the area of a triangle with side lengths of 11, 20, and 24 units. Round the
answer to the nearest hundredth.
A. 27.5 units squared
C. 109.14 units squared
B. 103.22 units squared
D. 113.46 units squared
2. Find the area of a triangle with side lengths of 12.2, 14.3, and 21.4 units. Round
the answer to the nearest hundredth.
A. 24.00 units squared
C. 100.15 units squared
B. 103.63 units squared
D. 83.22 units squared
3. Find the area of a triangle with side lengths of 10, 12 and 15 units. Round the
answer to the nearest hundredth.
A. 59.81 units squared
C. 20.40 units squared
B. 74.46 units squared
D. 24.54 units squared
4. Find the area of a triangle with side lengths of 5, 10 and 12 units. Round the
answer to the nearest hundredth.
A. 59.81 units squared
C. 20.40 units squared
B. 74.46 units squared
D. 24.54 units squared
5. Find the area of a triangle with side lengths of 16, 24 and 29 units. Round the
answer to the nearest hundredth.
A. 173.25 units squared
C. 191.99 units squared
B. 207.87 units squared
D. 84.67 units squared
6. Find the radius of a circle if the measure of the central angle,
with a length of
centimeters. Use
.
A. 18 cm
B. 12 cm
C. 9 cm
D. 5 cm
, intercepts an arc
7. Find the radius of a circle if the measure of the central angle,
arc with a length of
centimeters. Use
.
A. 32 cm
B. 16 cm
C. 9 cm
D. 6 cm
8. Find the arc length of a circle if the central angle measures
measures 20 inches. Leave your answer in terms of .
A. 5π inches
B. 10π inches
C. 20π inches
, intercepts an
and the radius
D. 40π inches
9. Find the arc length of a circle if the central angle measures
measures 30 inches. Leave your answer in terms of .
A. 5π inches
10.
A.
12.
A.
13.
A.
C. 20π inches
D. 60π inches
Find the arc length of a circle if the central angle measures
radius measures 45 inches. Leave your answer in terms of .
A. 5π inches
11.
B. 10π inches
and the radius
B. 10π inches
C. 20π inches
D. 60π inches
Find the area of a sector of a circle if the central angle measures
radius measures 12 inches. Leave your answer in terms of .
B.
C.
C.
C.
and the
D.
Find the area of a sector of a circle if the central angle measures
radius measures 12 inches. Leave your answer in terms of .
B.
and the
D.
Find the area of a sector of a circle if the central angle measures
radius measures 12 inches. Leave your answer in terms of .
B.
and the
D.
and the
14.
Find the measure of the central angle with a radius of 13 inches and the area
of a sector measuring
square inches.
A. 45°
15.
B. 90°
C. 120°
D. 180°
Find the measure of the central angle with a radius of 18 inches and the area
of a sector measuring
square inches.
A. 45°
B. 90°
C. 120°
D. 180°
…
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