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m_a_m_a [10]
3 years ago
8

Find the area of the triangle with A =42 degrees, b = 8 feet, and c = 5 feet. Round to the nearest tenth.

Mathematics
2 answers:
nataly862011 [7]3 years ago
8 0

Answer:

13.4 feet squared

Step-by-step explanation:

Just took the test on edge

emmasim [6.3K]3 years ago
5 0
We will use the formula:
Area = 1/2*a*c*sinB

where a and c are the length of the sides and B is the angle between those 2 sides

Area = 1/2*5*8*sin42
Area = 20*sin42
sin 42 = <span>0.669130606359
Area = </span>13.38261212718

Rounded to the nearest tenth Area is equal to 13.4
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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
yanalaym [24]

Answer:

I am not sure .but i will try

i think so i will give correct answer

perpendicular of triangle is 22-10 cm =12 cm bcz both sides of triangle are equal =22

area of rectangle l×w= 22×17=374

area of triangle =h×b/2 Now we r not having h

lets find it

use pythagorus theorum (h2=P2+b2....2 here is square)

h=22.5cm

22.5×19=427(area of triangle )

374+427=801cm sq

i tried my best dont know its righr of wrong

pls mark me as brainlieast

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Step-by-step explanation:

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