Question

carcule a area de cada coroa circular raio 25,4cm e 15,1cm

Answer 1

Formula = πR²

1) π . 25,4²

π . 645, 16

3,14 . 645,16

2025,8024


2) π . 15,1²

π . 228,01

3,14 . 228,01

715,9514

Answer 2

Bom dia 

área da coroa circular

A = π* (R² - r²) 

R = 25,4 cm
r = 15.1 cm 

A = π * (25.4² - 15.1²) 
A = 417.15π cm²