etscigdem etscigdem
  • 18-01-2021
  • Mathematics
contestada

177 25 Marks
Rajesh is working out the area of a circle with radius 10.
He writes:
Area = 3.142 x 20
Explain why Rajesh's working is wrong.

Respuesta :

emma020
emma020 emma020
  • 18-01-2021

Answer:

Rajesh did πr2 (π × r × 2) instead of πr². The correct work would be

Area = 3.142 x 10²  so... Area = 3.142 x 100 not 3.142 x 20.

Answer Link

Otras preguntas

Which word does the participle modify? The child's excited outburst embarrassed his parents. a. embarrassed b. child's c. parents d. outburst
what is 67 divided by 19
How many minutes is 21/80
what is 67 divided by 19
How were the franks connected to the Catholic Church
what instrument did John Williams play as a kid
The domestication of plants led to more stationary settlements during the First Agricultural Revolution.
How did Chief Pontiac unite the native Americans in the Great Lake Region?
Which of the following describes the nonfiction writer's purpose? Persuade Inform Entertain All of the above
Which expression best represents the difference between triple a number and double a number? a. 3x-2x b. 2x-3x c. x3-x2 d. x2-x3