mkjumaimah
mkjumaimah mkjumaimah
  • 03-06-2021
  • Mathematics
contestada

The area of a circle is 43.25cm2.
Find the length of the radius rounded to 2 DP.

Respuesta :

theleangreenbean
theleangreenbean theleangreenbean
  • 03-06-2021

Answer:

3.71 cm

Step-by-step explanation:

Hi there!

Area of a circle equation: [tex]A=\pi r^2[/tex] where r is the radius

Plug in the area 43.25 cm²

[tex]43.25=\pi r^2[/tex]

Divide both sides by π to isolate r²

[tex]\frac{43.25}{\pi} =\frac{\pi r^2}{\pi} \\\frac{43.25}{\pi}=r^2[/tex]

Take the square root of both sides to isolate r

[tex]\sqrt{\frac{43.25}{\pi}} =r\\3.71=r[/tex]

Therefore, the length of the radius rounded to 2 decimal points is 3.71 cm.

I hope this helps!

Answer Link

Otras preguntas

if a submarine is 3750 feet below sea level what is the integer
someone pls solve this using order of operations Explain in details too pls i dont get it and i have a test on it
Answer for me please, it’s in Spanish
Factor completely x3 6x2 8x 48. (x − 6)(x2 − 8) (x − 6)(x2 8) (x 6)(x2 − 8) (x 6)(x2 8).
Can someone help me?! Please ​
Mr. Parker bought a coat when it was on sale. He paid 70% of the original price. He paid $42 for the coat. What was the original cost of the coat?
how stress can be a motivating force in achieving good results in grade 12? ​
Help please can someone help me
Order of flats and sharps Fix what is circled in black it’s wrong Thank you
How empathy can prevent a stressful transition learnerto the work environment