Question

Tolong ya kak aku butuh banget​

Answer 1

Jawab:

Penjelasan dengan langkah-langkah:

42. K = (2 x (18 + 14)) - (1/2 x 2 x 22/7 x 7)

K = (2 x 32) - 22 = 64 - 22 = 42 cm

43. L = a x t = 28 x 12 = 336 cm2

44. K = 2 x 3,14 x 15 = 94,2 cm

45. L = 3/10 x 22/7 x 35^2

L = 3/10 x 22/7 x 1225 = 1155 cm2

46. L = ((20 + 28) x 15) : 2 + (1/2 x 21 x 16)

L = (48 x 15) : 2 + 168

L = 360 + 168 = 528 cm2

47. K = 2 x (30 + 18) = 2 x 48 = 96 m x 4 = 384 m