3 years ago

What is the area of a semicircle with a diameter of 10 cm?

Mathematics

2 answers:

Irina18 [472]3 years ago

7 0

Answer:

Step-by-step explanation:

area of semi circle = π r² / 2

where r = 10/2 = 5 cm

area = π (5)² / 2

= 39.27 cm²

mixas84 [53]3 years ago

4 0

Answer:

39.3 cm2

Step-by-step explanation:

diameter=radius/2= 10/2 = 5

area of semicircle=pi(r^2) / 2

=pi(5^2) / 2

=39.26...

=39.3

You might be interested in

Please any help is necessary

Ugo [173]

Answer:

Option D. 50 ft

Step-by-step explanation:

we know that

The area of the figure is equal to the area of three rectangles

$A=18x+(48-36)(32-11)+(18)(32)$

$A=18x+(12)(21)+(18)(32)\\A=18x+828$

Remember that the area is given

$A= 1,728\ ft^2$

$18x+828=1,728$

solve for x

$18x=1,728-828\\18x=900\\x=50\ ft$

3 0

3 years ago

Which properties are used in multiplying polynomials together?

meriva

Answer:

we use distributive property.

Step-by-step explanation:

for example:

4(5x+7)=

4x5x=20x

4x7=28

so the answer is:

20x+28

hope this helps : )

4 0

3 years ago

A scale on a map shows that 1 inch = 25 miles. How many inches on the map represent 100 miles? *

Lilit [14]

Answer:

4 inches

Step-by-step explanation:

Every 25 miles the map shows 1 inch
100 miles is equal to 4 x 25 miles, thus 100 miles on the map will be 4 times longer than 1 inch => 4 inches

8 0

2 years ago

Write this ratio as a fraction in simplest form without any units. 21 feet to 10 yards

Delvig [45]

Answer: 2 1/10

Step-by-step explanation:

21 : 10

Step 1: to write as a fraction= 21/10

2 1/10

7 0

3 years ago

One fourth the difference of the opposite of 8 and 6

olga2289 [7]

The difference of 8 and 6 is 2. One fourth of 2 is 2 divided by 4 is one half or 1/2

6 0

3 years ago