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shtirl [24]
3 years ago
7

Find the surface area of the composite solid. round the answer to the nearest hundredth.

Mathematics
1 answer:
lubasha [3.4K]3 years ago
5 0
The picture in the attached figure

[surface area of the composite solid]=1*(4*6)+2*(4*4)+2*(4*6)+2*(4*√13/2)+2*(6*2√2/2)
[surface area of the composite solid]=24+32+48+4√13+12√2
[<span>surface area of the composite solid]=135.39 yd</span>²

the answer is
135.39 yd²

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I need help with 18-21
nordsb [41]

Answer:

∠CBJ ≅ ∠ DHG

∠ FJH ≅ ∠ AJB

m∠JAB=75°

m∠JBC=130°

Step-by-step explanation:

Please refer to the image uploaded with this answer.

Here we are given two parallel line C and D and two transverses to them E and G ,  there by forming a number of angles. Before answering them we must under stand the characteristics of the angles formed by them and the various properties of them. For that please refer to the image attached,

i)  we are asked to find the congruent angle to ∠CBJ has a corresponding angle names as ∠ DHG. And corresponding angles are same so ∠CBJ ≅ ∠ DHG

ii) Also ∠ FJH  ≅ ∠ AJB , as they are vertically opposite angles and vertically opposite angles are equal.

iii) m∠EFD =75°

m∠EFD ≅ m∠JAB=75° ( corresponding angles )

iv) m∠GHF=130°

m∠GHF=m∠JBC=130°  ( corresponding angles )

4 0
2 years ago
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Black_prince [1.1K]

Answer:

x = 20°

f = 40°

Step-by-step explanation:

4x + 5x = 180°

because a straight line is 180°

so 9x = 180°

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all angles in a triangle add together is 180°

so 7x + f = 180°

1x = 20

7x = 20 × 7

7x = 140°

f = 180° - 140 °

f = 40°

4 0
2 years ago
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Step-by-step explanation:

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Answer: I think it is  b

Step-by-step explanation:

6 0
3 years ago
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