Question

Tolong no 7 8 9 pleaseeeeeeeee

Answer 1

7. Luas=3/4×phi×r kuadrat
=3/4×22/7×14×14
=462
8. Keliling=2×(a+t)
=2×(9+6)
=2×15
=30cm
9. L=s×s
=14×14
=196
L=1/2×phi×R kuadrat
=1/2×22/7×7×7
=77
L=1/4×phi×R kuadrat
=1/4×22/7×14×14
=154
L semua=196+77+154=427cm