Question

bantu jawab bsk dikumpulkan,jangan ngasal ya kak ​

Answer 1

a. 251,2 cm²

b. 1.695,6 cm²

c. 308 cm²

Penjelasan dengan langkah-langkah:

a. L = 72/360 x 3,14 x 20 x 20

= 1/5 x 1.256

= 251,2 cm²

b. L = 150/360 x 3,14 x 36 x 36

= 1.695,6 cm²

c L = 45/360 x 22/7 x 28 x 28

= 1/8 x 2.464

= 308 cm²

Answer 2

1) L.COD :

= (72/360(3,14(20²)

= (72/360(3,14(400)

= (72/360(1.256)

= (72(1.256)/360)

= (90.432/360)

= 251,2 CM²

2) L.TOU :

= (150/360(3,14(36²)

= (150/360(3,14(1.296)

= (150/360(4.069,44)

= (150(4.069,44)/360)

= (610.416/360)

= 1.695,6 CM²

3) L.ROS :

= (45/360(22/7(28²)

= (45/360(22/7(784)

= (45/360(17.248/7)

= (45/360(2.464)

= (45(2.464)/360)

= (110.880/360)

= 308 CM²