ini kak.tolong ya d kumpulkan besok.maaf kalau ndak jelas ftonya

25. r=a
Luas= π.a.a=π.a^2
keliling= 2.π.a
jawaban: B

26. A. CD -->> cek gambar

28. L= 706,5 cm^2
π= 3,14

L=1/4.π.d^2
706,5= 1/4 x 3,14 x d^2
d^2= (706,5 x 100)/314 = 900 cm
d=√900= 30 cm...
cara udah bener, coba tanya gurunya...


29. C. juring



1. k= 88 m
k=2.π.r
r=k/2.π= 88/2.π= 44: π= 44:22/7= 44 x 7/22= 14 m
L= π.r^2= 22/7 x 14 x 14= 616 m^2

2. L= 3.850 m^2
π= 22/7

L= π.r^2
r^2=L/π= 3850 : 22/7= 1.225
r= 35 m

3. L= 2.464 cm^2

r^2= L/π= 2464 : 22/7= 784 cm
r= 28 cm

k= 2.π.r= 2 x 22/7 x 28= 176 cm

4. Tembereng..

5. FO