vrindakoirala vrindakoirala

01-01-2022
Mathematics

contestada

The perimeter of a circle=πr², where π=22/7. find the area of r=21cm

Respuesta :

silirobert15 silirobert15

01-01-2022

EXPLAINATION: [tex]\pi r^2=\frac{22}{7} .21^2=\frac{22}{7} .441=\frac{22.441}{7} =\frac{22.63.7}{7} =22.63=1386<cm^2>[/tex]

ANSWER: 1386 [tex]cm^2[/tex]

Ok done. Thank to me :>

Answer Link

Otras preguntas

Just need a little help

I need help I'm very confused. I tried to complete it but, I got stuck. The diameter of the semicircle is 58 . The radius of each small circle is 5 . What is t

help plz and thanks explain to thanks! 4 and 5

Which type of map would give information about recent volcanic eruptions in an area?

What type of poem is this? A) haiku B) sestina C) sonnet D) ode

If the Earth is a sphere, would we be able to walk/go around the Earth in a straight line and end up in the same place?

Is this problem right?

What term describes the inheritance of cystic fibrosis? a) polygenic inheritance b) multiple alleles c) incomplete dominance d) recessive genes

What criteria does scientists use to classify plants ?

SOMEONE SMART 20 POINTS Not much instruction is left, I'm asked to simplify. I want to know if I got it right or wrong. I don't want the answer i just want to