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vova2212 [387]
3 years ago
6

Find the volume and surface area of the earth if its circumference is 40 000 km

Mathematics
1 answer:
inn [45]3 years ago
8 0

Answer:

volume = 3.24× 10 ∧12, SA = 5.09 × 10 ∧8

Step-by-step explanation:

Check attachment

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The sum of the present ages of Mark and his mother is 60 years. In 6 years she will be twice as old as he will be. Find their pr
Igoryamba

Answer:

  Mark is 18; his mother is 42.

Step-by-step explanation:

In 6 years, 12 years will be added to the total of their ages, so it will be 72. Since this is the total of Mark's age and twice Mark's age, his age at that time will be 72/3 = 24. His mother will be 48 at that time.

Now, they are 6 years younger than that, so they are 18 and 42.

5 0
3 years ago
Find the perimeter of the figure to the nearest hundredth. perimeter: about cm
nordsb [41]

The perimeter of the figure to the nearest hundredth is 50.26 cm.

<h3>Perimeter of a figure.</h3>

The perimeter of a figure is the sum of the whole sides of the figure.

The perimeter of the figure can be found as follows:

perimeter of the figure = 12 + 5 + 5 + circumference of the semi circle

circumference of the semi circle  = πr

where

  • r = radius

perimeter of the figure = 22 + πr

perimeter of the figure = 22 + 3.14(9)

perimeter of the figure = 22 + 28.26

perimeter of the figure = 50.26 cm

learn more on perimeter here: brainly.com/question/11419989

#SPJ1

6 0
2 years ago
Can yall help me do this
4vir4ik [10]

Formula = 4/3 x pi x r^3

4/3 x 3.14 x 7^3 = 1436.03


answer: a. 1436.03 cubic units

3 0
2 years ago
Read 2 more answers
3.
PilotLPTM [1.2K]

Answer:

0.25 lbs for each sandwich.

3 0
3 years ago
a kitchen is shaped like a rectangle with dimensions of 4ft by 7ft. The floor of the rooms is made up of square tiles with a sid
Darina [25.2K]

Answer:

112 tiles

Step-by-step explanation:

Area = 28ft sq

Tiles are 1/4 each sqft

We are working cube square inside cube ft square = 1 sq /4 (for multiplier).

= 4 x 28 = 112

112 x 0.25 = 28 to check.

112 x 0.25 x 4 = 112 is the multiplier to check again.

5 0
4 years ago
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