Respuesta :

AlyssaDancer
For the first one each side would be 2.05. Because 2.05 x4 = 8.2. I hope this helps.
SkyCas
1. 8.2•8.2= 67.24.
2. 0.5(9•11)= 49.5.
3. pi•(17/12)^2= about 289/144pi.
4. 3.75•7.6= 28.5.
5. (42•20)+(10•22)= 840+220= 1,060.
6. 0.5(10.667•3.2)+(10.667•15)= 170.667+160= 330 and two thirds.