1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nordsb [41]
2 years ago
13

Pls help i give u brainliest and 5 stars ​

Mathematics
2 answers:
Harrizon [31]2 years ago
7 0

Answer:

1932.4816

Step-by-step explanation:

The formula for SA of a cube is 4πr² so half is 2πr² and sing the radius is 7 the answer is 1932.4816 cm²

Umnica [9.8K]2 years ago
3 0

Answer:

Step-by-step explanation:

Diameter = 14 cm

r = 14/2 = 7 cm

Outer surface area of hemisphere =2πr²

      = 2π*7*7

      = 98π cm²

You might be interested in
The chances that it will rain tomorrow are 20% what are the chances that it will not rain?
balandron [24]
Hey!~

The chances that it will not rain "tomorrow" is 80%

Hope this helps and have a great day!

-Lindsey
5 0
3 years ago
Pls only do this if yk it because i’m giving correct answer brainliest! :))
Leno4ka [110]

Answer:

x=2+\frac{1}{2}\sqrt[]{21}

or

x=2-\frac{1}{2}\sqrt{{21}

Step-by-step explanation:

4x^2-16x-26=-21

Add 21 on both sides.

4x^2-16x-26+21=-21+21

4x^2-16x-5=0

a=4

b=-16

c=-5

x=\frac{-b\frac{+}{}\sqrt[]{b^2-4ac}  }{2a}

x=\frac{-(-16)\frac{+}{}\sqrt[]{(-16)^2-4(4)(-5)}  }{2(4)}

x=\frac{16\frac{+}{}\sqrt[]{256+80}  }{8}

x=\frac{16\frac{+}{}\sqrt[]{336}  }{8}

x=\frac{16\frac{+}{}\sqrt[]{2^2*2^2*21}  }{8}

x=\frac{16\frac{+}{}2*2\sqrt[]{21}  }{8}

x=\frac{16\frac{+}{}4\sqrt[]{21}  }{8}

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

x=\frac{16}{8}+\frac{4\sqrt[]{21}}{8}

x=2+\frac{1}{2}\sqrt[]{21}

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

x=\frac{16}{8}-\frac{4\sqrt[]{21}}{8}\\x=2-\frac{1}{2}\sqrt{{21}

6 0
2 years ago
Read 2 more answers
In ΔKLM, k = 13 cm, l = 17 cm and m=28 cm. Find the measure of ∠K to the nearest degree.
chubhunter [2.5K]

Answer:

18

Step-by-step explanation:

Delta math

8 0
2 years ago
Read 2 more answers
Which statement correctly compares two value?
tresset_1 [31]

Answer:

The value of the 5 in 50.89 is 100 times the value of the 5 in 261.58

Step-by-step explanation:

The 5 in 50.89 is in the 10's place

The 5 in 261.58 is in the 1/10's place

1/10(100) = 10

6 0
2 years ago
What is shaded in here?
Lady_Fox [76]

Answer:

4/100 is the fraction

Step-by-step explanation:

there are four blue blocks shaded out of the 100

7 0
3 years ago
Read 2 more answers
Other questions:
  • In 2016, the mean number of wins for teams in Major League Baseball was 81 wins with a standard deviation of 10.7 wins. (a) The
    7·1 answer
  • Let f(x) = 4 – x^2-, g(x) = 2 – x. Find (f + g)(x) and its domain.
    14·1 answer
  • Which pair of segments in the figures below are congruent?<br><br>​
    6·1 answer
  • Solve the equation. -2x + 7x + 34 = -2 ( 1 - 7 \x )
    7·1 answer
  • Pls answer asap the sooner the better :)
    6·1 answer
  • If f(t) = 3t4 + 5t+8, what is the value of f(-2)?
    12·2 answers
  • How many isosceles triangles are in a rectangle
    10·2 answers
  • Prove why 2,5,8,11 and 14 are not perfect squares?​
    8·2 answers
  • PLEASE HELP VERY LAST QUESTION
    7·1 answer
  • Ernie deposits $9,800 into a pension fund. The fund pays a simple interest rate of 7%. What will the balance be after four years
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!