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OLEGan [10]
3 years ago
9

Hi, can anyone help me with question 4b? Thanks!

Mathematics
2 answers:
riadik2000 [5.3K]3 years ago
8 0
Volume of the pyramid = 1/3 x base area x height
Volume of the pyramid = 1/3 x10 x 10 x 15
Volume of the pyramid = 500 cm³

Perfume = 4/5 liters
Perfume = 4/5 x 1000 ml (convert liters to ml)
Perfume =800 ml
Perfume =800 cm³ (convert ml to cm³)

Volume of the perfume in the cuboid = 800 - 500
Volume of the perfume in the cuboid = 300 cm³

Height of the perfume in the cuboid = 300 ÷ (10 x 10)
Height of the perfume in the cuboid = 300 ÷ 100
Height of the perfume in the cuboid = 3 cm

Total height = 3 + 15  (15 being the height of the pyramid))
Total height = 18 cm
jeka943 years ago
4 0
Sry the question was little confusing so took me a while

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A pyramid shaped building is 311 feet tall and has a square base with sides of 619 ft. The sides of the building are made from r
zmey [24]

Answer:

Surface area of the reflective glass is 543234.4 square feet.

Step-by-step explanation:

Given that: height = 311 feet, sides of square base = 619 feet.

To determine the slant height, we have;

l^{2} = 311^{2} + 309.5^{2}

   = 96721 + 95790.25

   = 192511.25

⇒ l = \sqrt{192511.25}

      = 438.761

The slant height, l is 438.8 feet.

Considering one reflecting surface of the pyramid, its area = \frac{1}{2} × base × height

  area =  \frac{1}{2} × 619 × 438.8

          = 135808.6

          = 135808.6 square feet

Since the pyramid has four reflective surfaces,

surface area of the reflective glass = 4 × 135808.6

                                                          = 543234.4 square feet

4 0
3 years ago
I need help plz help me !!
elena-14-01-66 [18.8K]

Answer:

110

Step-by-step explanation:

y = 11/6x where x is in minutes

there are 60 minutes in an hour

plug in 60 as x

11/6 *60 = 11*10 = 110

6 0
3 years ago
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There are 86400 frames of animation in 1 hour of anime. How many frames are there per second?
a_sh-v [17]

Answer:

1400

Step-by-step explanation:

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3 years ago
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Jacqueline reach the end of the trail in two hours and 15 minutes. Write the amount of hours he spent on the trail as a mixed nu
LenaWriter [7]
You would keep the 2 hour for the whole number of the mixed number and then, make the minutes (15) as a fraction with 60, and divide them both by 20. that is just for the mixed number.
4 0
3 years ago
Round 14.354 to the nearest one.
Gnoma [55]

Answer:

14

Step-by-step explanation: hope this helps :)

3 0
3 years ago
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