daijawatson
daijawatson daijawatson
  • 13-04-2017
  • Mathematics
contestada

What is the radius of a circle with a sector area of 7 sq. ft. and an arc whose measure is 70°?

Respuesta :

alkhalidisara
alkhalidisara alkhalidisara
  • 13-04-2017
the radius is 6 feet.
Answer Link
apologiabiology
apologiabiology apologiabiology
  • 13-04-2017
360 degrees in circle
70/360 of full circle=7square feet
7/36 of full circle=7 squre feet
times both sides by 36/7
full circle=36 square feet

area=pir^2
36=pir^2
divide oth sides by pi (use 3.141592)
11.459=r^2
sqrt both sides
3.3851
about 3.4ft
Answer Link

Otras preguntas

Differences and Similarities in American Society Between the 1920s and the 1930splz help me
What two natural resources were the major reason the industrial revolution
What are all factors for 35
Which equation represents a linear function?
A line of regression y=-1,240 + 7.07x is the best fit line for a set of data comparing airfare with 30 days notice and one-day notice. Find the best predicted c
Please please need help on this
I’m stupid I don’t even know 5th grade math
Which option is an example of a persuasive appeal
define food adulteration
The revenue recognition principle a. is not in conflict with the cash method of accounting b. states that revenue is not recorded until the cash is received c.