tolong bantu dijawab ya dan pake caranya???

4.
p^2 = 8^2 + 6^2 = 64 + 36 = 100
p = 10

5.
1/2 × S × (S + 7) = 60
S^2 + 7S = 120
S^2 + 7S - 120 = 0
(S + 15)(S - 8)=0
S = 8 m

Y^2 = 8^2 + 15^2 = 64 + 225 = 289
Y = 17 m

Keliling = 8 + 15 + 17 = 40 m

6.
s^2 = 3^2 + 3^2 = 9 + 9 = 18
s = 3 akar 2

7.
x^2 = 30^2 - 24^2 = 900 - 576 = 324
x = 18 cm

Luas = 18 × 24 = 432 cm2

8.
1/2 × 20 × t = 240
t = 24 cm

s^2 = 24^2 + 10^2 = 576 + 100 = 676
s = 26 cm

Keliling = 26 + 26 + 20 = 72 cm

9.
c^2 = 30^2 - 18^2 = 900 - 324 = 576
c = 24 cm