3 years ago

Really need help Pls

Mathematics

1 answer:

Studentka2010 [4]3 years ago

6 0

Answer:

20.57 cm

Step-by-step explanation:

Circumference of half circle = diameter + half of circumference

$= 8 +\dfrac{2\pi r}{2}\\\\\\= 8 + \pi r\\\\= 8 + 3.142 * 4\\\\= 8 + 12.568\\\\= 20.568\\\\= 20.57 \ cm$

You might be interested in

HELP ME PLEASE

aivan3 [116]

Answer:

Answer is A

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Last year Billy weighed 75kg. This year he weighed 90kg. With what percentage did his weight increase. SHOW ALL WORK!!!

k0ka [10]

Answer:

20%

Step-by-step explanation:

90 - 75 = 15

15 ÷ 75 = 0.2

0.2 x 100% = 20%

8 0

4 years ago

If a marble rotates 180 degrees in 9 seconds, how many does it rotate in 18 seconds.

Troyanec [42]

It would rotate 360 degrees because 18 seconds is twice the amount of 9 seconds, so you need to multiply 180 by 2, which is 360, or one full rotation.

6 0

3 years ago

Read 2 more answers

Find the domain and range for the function shown in the graph given below.

eimsori [14]

Answer:

Domain: [-20, 20]

Range: [-30, 5]

Step-by-step explanation:

The domain is the set of x values and the range is the set of y values.

7 0

1 year ago

Peter paid $12.83 for a DVD. The price of the DVD was $11.99. How much sales tax did Peter pay? $0.07

Simora [160]

12.83 - 11.99 = 0.84

5 0

3 years ago

Read 2 more answers