Step-by-step explanation:
S+T+U=180°{sum of angle of triangle}
- 68°+90°+U=180°
- U=180-158°
- U=22°
sin theta= p/h
sin22°=x/83
o.37=x/83
x=0.37×83
x=30.71
x=31
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Answer:
Option A is the correct answer.
Explanation:
The given pyramid has 3 lateral triangular side as shown below.
Base of triangle = 12 unit
We need to find perpendicular.
By Pythagoras theorem we have
Perpendicular² = 10²-6²
Perpendicular = 8 unit
So area of 1 lateral triangle = 1/2 x Base x Perpendicular.
= 1/2 x 12 x 8 = 48 unit²
Area of lateral side = 3 x 48 = 144 unit²
Option A is the correct answer.
Answer:
Names that describe the shape- Trapezoid, Quadrilateral
Names that don't describe the shape- Square, Rectangle, Parallelogram and rhombus
Step-by-step explanation:
Answer:
1.3 pounds; on average, weight of a bag varies 1.3 pounds from the mean of 7 pounds
Step-by-step explanation:
the mean absolute deviation is 1.3 and the mean is 7. i just took this test today, hoped this helped:)