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Yuri [45]
3 years ago
13

103. Please help me!10 points! Thanks.

Mathematics
1 answer:
Inessa05 [86]3 years ago
8 0
The formula for the surface area of a sphere is 4πr^2

This can be used in the following way, getting the diameter at 18.3:
18.3/2 = 9.15
Saying PI is 3.14 you can do this:

SA = 4*3.14*9.15^2 = 1051.6 m^2

Formula for volume is:
(4/3)πr^3

V = (4/3)*3.14*9.15^3 = 3207.2 m^3
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The half of the day from midday to midnight can be described as
Serjik [45]

Answer:

24hours divided by 2 is 12

Step-by-step explanation:

8 0
3 years ago
Please answer this correctly
Serggg [28]

Answer:

502 m²

Step-by-step explanation:

We require to find b before calculating the surface area.

The volume (V) of a cuboid is calculated as

V = lbh ( l is length, b is breadth and h is height )

Here V = 510, l = b, b = 10 and h = 3, thus

b × 10 × 3 = 510

30b = 510 ( divide both sides by 30 )

b = 17

--------------------------

The opposite faces of a cuboid are congruent, thus

top/bottom area = 2(17 × 10) = 2 × 170 = 340 m²

front/back area = 2(17 × 3) = 2 × 51 = 102 m²

sides area = 2(10 × 3) = 2 × 30 = 60 m²

Surface area = 340 + 102 + 60 = 502 m²

3 0
3 years ago
Consider the sequence: 7, 8, 9, …, … , …
Sunny_sXe [5.5K]
7 is the first term, 8 is the second term, 9 is the third term. the sequence itself has 6 terms being 7, 8, 9, 10, 11, 12
8 0
3 years ago
Solve the formula for the indicated variable. show work. please & thank you!!
il63 [147K]

s=\dfrac{1}{2}gt^2\:\:\:\mathrm{divide\:both\:sides\:by\:t^2} \\\dfrac{s}{t^2}=\dfrac{1}{2}g\:\:\:\mathrm{divide\:both\:sides\:by\:1/2} \\\dfrac{\frac{s}{t^2}}{\frac{1}{2}}=g\:\:\:\mathrm{simplify} \\g=\boxed{\dfrac{2s}{t^2}}

Hope this helps.

8 0
3 years ago
Use cross multiplication to figure this out. (What does xy = )<br> .78x/7 = 19/4y
kap26 [50]

Answer:

xy = 42.6282051282...

Step-by-step explanation:

0.78x/7 = 19/4y

0.78x * 4y = 3.12xy

19 * 7 = 133

3.12xy = 133

3.12xy/3.12 = 133/3.12

xy = 42.6282051282...

8 0
2 years ago
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