D because the top and the bottom are faces and the middle is a face
A. side AB = 38/3 units B.m∠VYX =77°
Step-by-step explanation:
A.A rhombus has its four sides equal. This means side AB=side CD
Given that AB=5x+1 and CD=2x+8 equate the two sides to find value of x as;
5x+1=2x+8
collect like terms
5x-2x=8-1
3x=7
x=7/3
side AB = 5x+1
AB= 5*7/3 +1
AB=35/3 +1
AB=35/3 +3/3 = 38/3
B.
The diagonals of a rhombus intersect to form 90°
Hence
(3n²-0.75)°=90°
3n²=90°+ 0.75°
3n² =90.75° -----dividing by 3 both sides
n² =90.75°/3 =30.25°
n²=30.25°
n=√30.25°
n=5.5°
so angle Z =90°
and angle ZVW =(9n+2)°
∠ZVW = (9*5.5 +2 )° =51.5°
In a rhombus all four sides are equal, thus side VY = YX.This means triangle VYX is an isosceles triangle.
Hence angle ∠YVZ=∠WVZ =51.5°, and because VYX is an isosceles triangle then ∠YXV =51.5° so
∠VYX= 180°-(51.5°+51.5°)
=180°-103°=77°
Learn More
Properties of a Rhombus : brainly.com/question/1305249
Keywords : Rhombus, fraction, simplest form
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Answer:
Area of Triangle = 1/2 bh
A = 1/2 (16 cm x 10 cm)
A = 160 cm2/2
A = 80 square cm
Area of Circle = 
d2/4
A = 3.14 x (16 cm)2 / 4
A = 3.14 x 256 cm2 / 4
A = 803.84 cm2 / 4
A = 200.96 cm2
Area of Half Circle = 200.96 cm2 / 2
A = 100.48
Composite Figure = Area of Triangle + Area of half Circle
Area of Composite Figure = 80 cm2 + 100.48 cm2
Area of Composite Figure = 180.48 cm2
Step-by-step explanation:
hope it is helpful to you
