Question

Tolong di jawab yaaah
#Terima kasih yaaa kepada yg sdh mau jawab

Answer 1

Nomor 21. L = 1/4 x phi x r x r = 1/4 x 3,14 x 30 x 30 = 706,5 cm2 jawabannya B. Nomor 22. K1 = s x 4 = 14 x 4 = 56 cm. K2 = 1/4 x 2 x phi x r = 1/4 x 2 x 22/7 x 14 = 22 cm. Ks = K1 + K2 = 56 + 22 = 78 cm jawabannya B. Nomor 23. Lp = 6 x s x s = 6 x 15 x 15 = 1.350 cm3 jawabannya C. Semoga bermanfaat : )

Answer 2

21. Luas lingkaran = 1/4 × π × r × r
3,14 × 30 × 30 = 1/4 × 2826 = B. 706,5

22. Keliling lingkaran = 2 × π × r × 1/4
2 × 22/7 ×14 = 88 × 1/4 = 22 cm
Keliling persegi = 4 × s
4 × 14 = 56 cm
22 + 56 = 78 cm B.

23. Luas Kubus = 6 × rusuk²
6 × 15² = 6 ×225 = 1350 cm² C.

Smoga Bermanfaat ^_^