Answer:
Step-by-step explanation:
I will solve this question with the attached triangle
From the attachment, we have:
Required
Solve the triangle
First, we calculate 
using sine law:
This gives:
Cross multiply
Divide both sides by 29
Take arcsin of both sides
Next, calculate 
using:
--- angles in a triangle
Collect like terms
Next, calculate BC using sine laws
This gives:
Make BC the subject
All angle measure is preserved, therefore measure of A' is 115
Left triangle area
.. (1/2)*(30 ft)*(72 ft) = 1080 ft^2
Middle walkway area
.. (20 ft)*(72 ft) = 1440 ft^2
Right triangle area
.. same as left triangle area, 1080 ft^2
Total area
.. 1080 ft^2 +1440 ft^2 +1080 ft^2 = 3600 ft^2
_____
Check:
Parallelogram area = base*height = (50 ft)*(72 ft) = 3600 ft^2
Density = mass/volume
Volume = length x width x height
Volume = 2.5 x 2.5 x 2.5
= 15.625 cm^3
Density = 295/15.625
= 18.88 g/cm^3
Answer:
x = 14
Step-by-step explanation:
The triangle has 2 congruent legs and is isosceles with 2 base angles being congruent , then
5x = 3x + 28 ( subtract 3x from both sides )
2x = 28 ( divide both sides by 2 )
x = 14
