7. An isosceles triangle has two sides of length 14.7 cm and two 54° angles. What is the area of the triangle to the nearest tenth of a square centimetre?

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter7: Locus And Concurrence
Section7.2: Concurrence Of Lines
Problem 5E: a What is the general name of the point of concurrence for the three perpendicular bisectors of the...
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Can i get help with number 7.

6. Natalia and Sun are 14.5 m apart and looking up at the top of a radio tower. They are on the same side of the
tower. If Natalia is looking up at an angle of 28°, and Sun is looking up at the tower at an angle of elevation
of 31°, how tall is the tower to the nearest tenth of a metre? Assume their eyes are 1.6 m above the ground.
7. An isosceles triangle has two sides of length 14.7 cm and two 54° angles. What is the area of the triangle to
the nearest tenth of a square centimetre?
8. What is the perimeter, to the nearest tenth of a centimetre, of triangle LMN below?
L
NA
63
81
25 cm
M
Transcribed Image Text:6. Natalia and Sun are 14.5 m apart and looking up at the top of a radio tower. They are on the same side of the tower. If Natalia is looking up at an angle of 28°, and Sun is looking up at the tower at an angle of elevation of 31°, how tall is the tower to the nearest tenth of a metre? Assume their eyes are 1.6 m above the ground. 7. An isosceles triangle has two sides of length 14.7 cm and two 54° angles. What is the area of the triangle to the nearest tenth of a square centimetre? 8. What is the perimeter, to the nearest tenth of a centimetre, of triangle LMN below? L NA 63 81 25 cm M
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