Question

urgent DAU COROANAANANANNANANANANA​

Answer 1

Răspuns:

1. a+b=13

a-b=9

a+b+a-b=22

2a=22

a=11

b=13-11

b=2

2. g = numarul gastelor

c = numarul caprelor

g + c = 41

2g + 4c = 126

g = 41 - c

2(41 - c) + 4c = 126

82 - 2c + 4c = 126

2c = 126 - 82 = 44

c = 44 : 2 = 22 capre

g = 41 - 22 = 19 gaste

3. L cerc = 2πR

P=4R

L cerc-1=P

2πR-1=4R

2πR-4R=1

2R(π-2)=1

R=1/2(π-2)=1/2(3,14-2)=1/2 x 1,14=0,43

R=0,43cm