Question

find the area of a the shaded portion , given R= 4.5cm and r=2.5cm​

Answer 1

Step-by-step explanation:

Area of the bigger circle = Pi × R²

Area of the smaller circle = Pi × r²

Area of the shaded region = Area of bigger circle - smaller circle

= Pi × R² - Pi × r²

= Pi ( R² - r² )

= 22/7 × (4.5² - 2.5²) cm²

= 22/7 × ( 20.25 - 6.25) cm²

= 22/7 × 14 cm²

= 44 cm²

Answer 2

Answer:

you can minus the area of small circle from large circle

Step-by-step explanation:

formula used - pi × r²