Minta bantuannya ya kak, pakai cara

no. 4
a) GSD = √34²- (23 -7)²
=√1.156 - 256
= √900
= 30 cm
b) GSL = √34²- (23+7)²
= √1.156 - 900
= √256
= 16 cm
no. 5
a) #LuasΔ = 1/2 a. t
= 1/2 x 18 x 24
= 216 cm²
s = 1/2 ( a + b + c)
= 1/2 (18+24+30)
= 1/2 x 72
= 36 cm
jari-jari (r) = L / s
= 216 / 36 = 6 cm
b) r = a x b x c / 4 L
= 18x24x30 / 4x216
=12.960 / 864
= 15 cm