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Alex777 [14]
4 years ago
13

Help asap! its a surface area problem, please explain your answer.

Mathematics
1 answer:
Lapatulllka [165]4 years ago
8 0

Answer:

Therefore, 448 inches² Wrapping paper is needed to wrap a present.

Step-by-step explanation:

The Present Shape as per dimensions it is CUBOID

Given:

Length = 8 inches

Width = 8 inches

Height = 10 inches

To Find:

Surface Area of Cuboid = ?

( Wrapping paper is needed to wrap a present )

Solution:

By Formula we have

\textrm{Surface Area of Cuboid}= 2(Length\times Width +Width\times Height + Height\times Length)

Substituting the given value in above formula we will get

\textrm{Surface Area of Cuboid}= 2(8\times 8 + 8\times 10 + 10\times 8)\\\\\textrm{Surface Area of Cuboid}= 2(224)\\\\\textrm{Surface Area of Cuboid}= 448\ inches^{2}

Therefore, 448 inches² Wrapping paper is needed to wrap a present .

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If the blue radius below is perpendicular to the green chord and the segment BC is 7.6 units long, what is the length of the cho
galina1969 [7]

Answer:

The correct answer is A. 15.2 units

Step-by-step explanation:

The segment AB is congruent to the segment BC  eg AB≅BC Why?

We can prove it with the triangle congruent theorem, postulate side-side-angle

We are watching triangle ΔABO and triangle ΔCBO, they are congruent

first element side OB=OB - common side

second element side OA=OC=r - radius of the circle

third element angle ∡ABO≅∡CBO=90°

According to the postulate side-side-angle we can conclude that triangles

ΔABO≅ΔCBO (triangles are congruent)

If they are congruent all of their elements are also congruent and therefore also

side AB=BC  => AB+BC=AC,  which is chord  => 7.6+7.6=15.2 units

AC= 15.2 units ( chord )

Good luck!!!


6 0
3 years ago
Is 6,000 g bigger than 6kg
Helen [10]

They are equal in mass.

<u>1 kilogram is 1,000 grams.</u>

Meaning, 6,000 grams is 6 kilograms.

5 0
3 years ago
Read 2 more answers
Help. me math 20 points​
erastova [34]

Answer:

1st angle will 60degree =90-60,. 1nd angle =60 degree.vertically opposite angle,

7 0
3 years ago
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o-na [289]

Answer:

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Step-by-step explanation:

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3 0
2 years ago
all unicorns on rainbow island are either green or yellow. every time the clock strikes midnight the unicorns change their color
Oksi-84 [34.3K]

77 unicorns, because yesterday the ratio was 6:5 and today it is 3:4. If you add the numbers for both ratios together, you get 11 and 7. Finding the LCM of these two gives 77 (because 7 and 11 are both prime).

You find the LCM of the sums because when you find values based on ratios, you divide value by the sum of the ratio.

e.g. I have 100 fruits. The ratio of apples to oranges is 2:3. How many apples are there?

To solve this you'd add 2 and 3 (5), divide 100 by 5 (20), multiply that by 2 (40) because that's the ratio of apples to oranges.

In this case, you do the reverse. So If I have 77 unicorns, then yesterday there were (77/11 = 7, 7*6= 42, 7*5= 35) 42 green unicorns and 35 yellow. The sum of 42 and 35 is 77. If you do this process with the other ratio you'll get similar results as well.

6 0
3 years ago
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