Answer:
D (-5,10),(-1,10),(-1,7),(-5,6)
Step-by-step explanation:
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I guess you want the measure of angle <CAB.
The angle ABD is flat thus its amplitude is 180 degrees. Because
<ABD = <ABC + <CBD you get
<ABC = <ABD - <CBD = 180° - 122° = 58°.
In a triangle, the sum of the amplitudes of the angles is 180°. Thus
<CAB + <ABC + <ACB = 180°. You get
<CAB = 180° - <ABC - <ACB = 47°.
We know that
[the area of the root]=4*[area of one lateral triangle side]
area of one lateral triangle side=b*h/2
b=10 ft
h=9.4 ft
area of one lateral triangle side=10*9.4/2-----> 47 ft²
[the area of the root]=4*[47]-------> 188 ft²
the answer is
the area of the root is 188 ft²
Answer: Height =9
Step-by-step explanation:
Given: The diagonal of a rectangle has length 15.
Base of the rectangle is 12.
Since each angle in a rectangle is 90°°.
Therefore , th triangle formed by joining diagonal with base and hight is a right triangle.
In right triangle , 
[Pythagoras theorem]
Hence, the height =9
