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5) d1= 48 k= 100 d2=? l=?
100/4 = 25 (sisi miring)
dengan paham phytagoras, maka 24, 25, sisi lainnya adalah 7 (1/2xd2, d2= 14)
luas belah ketupat= 14x48x1/2 = 336 cm2 B
8) 4(x+3) = 2(2x-3) + 2(x+1)
4x+12 = 4x-6+2x+2
2x = 12+6-2
x= 8
panjang sisi persegi= x+3= 8+3= 11cm A
13) (p-2)-(p+3)<0 p=bilangan asli
2p-p<2+3
p<5
p= {1,2,3,4} D
semoga membantu:) jangan lupa jadikan jawaban terbaik yaa