tolong bantu saya ya pliss no 6 7 8

6. 3, 14×13×13=530.66 (b. 13)
7. Nggak tau
8.10+4=24×9=216÷2=108 (c. 108)

[tex]6)l = \pi \times r \times r \\ r = 530.66 \div 3.14 \\ = 169 \\ = \sqrt{169} \\ = 13cm \\ [/tex]
7)L arsir=1/2×12×14-1/2×12×8
=84-48
=36 cm2

8)L=1/2×(a+b)×t
=1/2×(10+14)×9
=1/2×24×9
=108 cm2