Question

tolong dibantu kak, cuma nomor 6 dn 8,bsk dikumpulkan.pake cara​

Answer 1

Jawaban:

6. 361.1 cm2

8a. 308 m2

8b. Rp. 154 Juta

Penjelasan dengan langkah-langkah:

6.

LP = 1/2 bola + selimut kerucut

= (1/2 × 4 x phi x r^2) + (phi x r x s)

= (phi x r)(2r + s)

= (3.14 x 5)(10 + 13)

= 15.7 x 23

= 361.1

8..a

LP 1/2 BOLA = 1/2 × 4 x phi x r^2

= 2 x 22/7 × 7 x 7

= 44 x 7

= 308

8b. biaya = 308 x Rp..500 000

= 1 54 000 000