3 years ago

What is the area of a circle with a radius of 7 cm? (Use 3.14 for and round to the nearest tenth.)

2 answers:

5 0

The area is pi times the radius squared, which would be 49 pi, or 49*3,14, which is 153,86. Rounding, it would be 153,9.

VMariaS [17]3 years ago

3 0

Answer:

A =153.9 cm^2

Step-by-step explanation:

We know the area of a circle is given by

A = pi r^2

We are given the radius and pi

A = 3.14 (7)^2

A =153.86 cm^2

Rounding to the nearest tenth

A =A =153.9 cm^2

You might be interested in

I don’t know the answer pls help I’ll give you brainliest!! 19 points.

gladu [14]

Answer:

it is A i think i am a nub tho

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is the surface area of the prism?

kow [346]

$The\ surface\ area:A_s=2B+(S_1+S_2+S_3)\cdot H\\B=\frac{12\cdot5}{2}=\frac{60}{2}=\boxed{30\ (yd^2)}\\\\S_1=5yd;\ S_2=12yd;\ S_3=13yd;\ h=8yd\\\\therefore\\\\A_s=2\cdot30+(5+12+13)\cdot8=60+30\cdot8=60+240=\boxed{300\ (yd^2)}$ $Volume\ of\ the\ prism:V=B\cdot H\\\\B\ (base)\ it's\ a\ right\ triangle:B=\frac{12\cdot5}{2}=\frac{60}{2}=\boxed{30\ (yd^2)}\\\\H=8yd\\\\therefore\\\\V=30\cdot8=\boxed{240\ (yd^2)}\leftarrow\boxed{C}$

8 0

3 years ago

Read 2 more answers

List the common multiple of 42 and 14 . Help plzzzz

Alborosie

The answer is 42,84,126 and so on.(you keep on adding 42)

3 0

3 years ago

4 a3b(-3a5b3+6a4b)+(3a4b2+6ab)2

Irina18 [472]

Answer:

− 12 a 8 b4+ 24 a7 b 2+ 6a 4b 2 + 12 a b

Step-by-step explanation:

Simplify each term

4 0

3 years ago

I need help right away!!!

Reptile [31]

Y=6 when x=18, find y when x=-12

so 6/18 = y/-12
cross multiplication
(6)(-12) = (18)(y)
-72 = 18y
divide both sides by 18
-4 = y

Hope this helps
XD

4 0

3 years ago