Question

A large planetarium in the shape of a some is being built at MHS. When it is complete, the base of the dome will have a circumference of 870. What is the area of land required for this planetarium​

Answer 1

Answer:

Step-by-step explanation:

circumference = 870

$\pi$ = 22/7

as we know

formula for circumference = $\pi$ x diameter($x$)

870   = 22/7 x $x$

7 x 870 =7 x 22/7 x $x$

(7 x 870)/ 22 = 22$x$/22

276.81 =$x$

the diameter = 277

the radius(r) therefore will be

diameter/2 = 277/2

                  =138.5

the area will be

$\pi$ $r^{2}$ = 22/7 x 138.5 x 138.5

      =60287.1