An umbrella has 8 ribs which are equally spaced (see fig.). Assuming umbrellato be a flat circle of radius 45 cm, find the area between the two consecutive ribs of
the umbrella.

Yes.

Step-by-step explanation:

You are correct except to the nearest hundredth it is 795.54 cm^2.

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

answer: 94

step-by-step explanation: 79+91+92+94+94 = 450 divided by 5 (since there are 5 number that are being added) = 90