no 26 - 27 yah pakai caranya jawab semuanya ya mksh

26) Lp = 2 x (pl + pt + lt)
           = 2 x (20.5 + 20.7 + 5.7)
           = 2 x (100 + 140 + 35 )
           = 2 x 275
           = 550 cm²

27) V = π x r² x t
          = 22/7 x 14 x 14 x 20
          = 12.320 cm³

26.. 2. ( pl+pt+lt) = 2x ( 20.5 + 20.7 + 5.7)
= 2. 275 = 550 cm

27.. phi r^2 .t = 22/7 . 14 .14. 20 = 22.2.14.20
= 44.280 = 12320