Question

Answer it ............

Answer 1

Answer:

% area of the shaded region = 33%

Step-by-step explanation:

Radius of the middle circle = 7 cm

Radius of the inner circle = 4 cm

Area of the middle circle = πr²

                                         = π(7)²

                                         = 49π

  Area of the inner circle = π(4)²

                                          = 16π

Area of the shaded region= 49π - 16π

                                           = 33π

Area of the outermost circle = π(10)²

                                              = 100π

% area of the shaded region = = [tex]\frac{\text{Area of the shaded region}}{\text{Area of the inner circle}}\times 100 [/tex]

                                               = [tex]\frac{33\pi }{100\pi }\times 100 [/tex]

                                               = 33%

Therefore, area of the shaded region is 33% of the complete logo.

$\rule{200}{2}$

Answer 2

Answer:

84%

Step-by-step explanation:

area of the biggest circle = $\pi$ * 10 * 10

area = 100$\pi$

area of the smallest circle = $\pi$*4*4

area = 16$\pi$

area of the shaded portion = (100 - 16)$\pi$

area = 84$\pi$

substituting the value of $\pi = \frac{22}{7}$ we get,

84 * $\frac{22}{7}$ = 264 $cm^{2}$

value of biggest circle = 100*22/7

314.28  $cm^{2}$

percentage composition = (264/314.28)*100

percentage = 84%

Mark as brainliest if you are satisfied with my answer