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1.what is the area of this triangle, enter your answer as a decimal 

2.what is the area of this triangle? round only your final answer to the nearest tenth.

3.

A triangular lawn has sides that are 8 m and 12 m long with an included angle of 51°.

What is the area of this lawn?

4.what is the area of this triangle, round only your final answer to the nearest hundredth.

tell me the answer and how to do it please! thanks!

Guest May 8, 2017
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 #1
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Area of triangle  1  =

 

(1/2) (8)(14.2) sin (99°)   ≈  56.1 in^2

 

 

Area of triangle 2   =

 

 (1/2) (12) (14)sin(20°)  ≈  28.7  ft^2

 

 

Area of triangular lawn =

 

(1/2) ( 8) (12) sin (51°)  ≈ 37.3 m^2

 

 

Area of last triangle =

 

(1/2) (3.2) (4.7) sin ( 62°)  ≈  6.64  ft^2

 

 

 

cool cool cool

CPhill  May 8, 2017

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