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Ilia_Sergeevich [38]
3 years ago
9

Please help supper important ​

Mathematics
1 answer:
ra1l [238]3 years ago
8 0

Answer:

A = 2

B = 4

C = 1

D = 3

Step-by-step explanation:

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HELP ASAP!! Lesson 4: Perimeters and Areas of Similar Figures
ziro4ka [17]
Part 1) 
area of triangle=b*h/2
b=2.9 cm
h=9 cm
so
area=2.9*9/2-----> 13.05 cm²

the answer part 1) is 13.05 cm²

Part 2) 
area of the figure=area of rectangle+area of triangle

find the area of rectangle
area rectangle=b*h
b=12 ft
h=?
tan 45=1
tan 45=h/(22-10)----------> h/10=1-------> h=10 ft
area of rectangle=12*10-----> 120 ft²

area of triangle=b*h/2
b=10 ft
h=10 ft
area of triangle=10*10/2----> 50 ft²

area of the figure=120+50----> 170 ft²

the answer Part 2) is 170 ft²

Part 3)
<span>the area of kite is half the product of the diagonals. 
</span>Area=(d1*d2)/2
d1=5+5---> 10 ft
d2=16+8----> 24 ft
area=(10*24)/2----> 120 ft²

the answer Part 3) is 120 ft²

Part 4)
the area of rhombus is half the product of the diagonals. 
Area=(d1*d2)/2
d1=6+6---> 12 m
d2=6+6----> 12 m
area=(12*12)/2----> 72 m²

the answer part 4) is 72 m²

Part 5)

area of the figure=6*area of one triangle

area of triangle=b*h/2
b=4 cm
is an equilateral triangle
applying the Pythagoras theorem
h²=4²-2²-----> h²=12-----> h=2√3 cm

area of triangle=4*2√3/2----> 4√3 cm²

area of hexagon=6*(4√3)----> 24√3 cm²

the answer Part 5) is 24√3 cm²
3 0
3 years ago
How do I find the total perimeter?
katovenus [111]
2, 10, 5.your answer..
4 0
3 years ago
AB = 15, BC = 10, and CD= 7. Find the length DA.
harkovskaia [24]

Answer:

  451. No, the angles are wrong.

Step-by-step explanation:

450. AB = 15, BC = 10, and CD= 7. Find the length DA.

  This cannot be done without additional information about the sort of figure that ABCD is. If these are points on a line segment, we need to know their order. If these are points on a quadrilateral, we need to know its description in more detail.

If these are points ordered ABCD on a line, then AD = 15+10+7 = 32.

__

451. See the attached figure. BPQD is not a parallelogram: BCQ is not a straight line. (The internal angles of a pentagon are 108°, but would need to be 120° for BCQ to be a straight line, making BP parallel to DQ.) Instead, BPQD is an isosceles trapezoid.

4 0
3 years ago
How do i simplify 2a 3(4a-5)?
____ [38]
2a 3x4a +3x-5
2a+12a-15
14a-15
i think thats the answer
8 0
3 years ago
What is the length of the hypotenuse?
yaroslaw [1]

Answer:

10

Step-by-step explanation:

c²=b²+a²=100

so

c=10

jjthj

3 0
3 years ago
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