Question

genteeeeeee help help

Answer 1

11)a= π.r²
a=3,14* 1.20²
a=3,14*1,44
a=4,5216 m²

12)A=π.r²
A=3,14.30²
A=3,14.900
A=2.826 CM²

13) 3,14.5²
a=78,5cm²;

3,14.3²
a=28,6cm²

3,14.2²
a=12,56cm²

logo A=78,5- 28,6+12,56
A=37,34 cm²