2. keliling jajargenjang =2(a+sisi miring)
=2(15+10)
=2(25)
=50 cm
luas jajargenjang=a×t
=15×8
=120 cm
3. luas jajargenjang=a.t
60=12.t
60÷12=t
5 m=t
4. luas segitiga=1/2×a×t
=1/2×14×10
=7×10
=70 cm
5. keliling segitiga sama sisi=3×s
=3×50
=150 cm
6. luas segitiga=1/2×a×t
42=1/2×a×7
42÷1/2÷7=a
84÷7=a
12 m=a
7. luas kue segitiga=1/2×a×t
=1/2×15×11
=7,5×11
=82,5 cm
8. keliling segitiga sama sisi=3×s
48=3×s
48÷3=s
16 cm =s
9.keliling segitiga sama kaki=a+2×s
44=16+2×s
44-16=2×s
28=2×s
28/2=s
14 cm=s
masing-masing sisi panjangnya 14 cm
10.keliling pigura sama sisi=3×s
=3×12
=36 cm
10 m=1000 cm
luas pigura=1/2×a×t
=1/2×12×1000
=6000 cm
11.luas jajargenjang=a×t
4500=90×t
4500÷90=t
50 cm =t
12.keliling jajargenjang=2(a+sisi miring)
46=2(15+sisi miring)
46=30+2sisi miring
46-30=2sisi miring
16÷2=sisi miring
8 cm=sisi miring
13. luas penggaris=1/2×a×t
=1/2×16×7
=56 cm
14. keliling jajargenjang=2(a+sisi miring)
=2(21+12)
=2(33)
=66 cm
15. luas segitiga=1/2×a×t
=1/2×50×5
=125 cm
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2. keliling jajargenjang =2(a+sisi miring)
=2(15+10)
=2(25)
=50 cm
luas jajargenjang=a×t
=15×8
=120 cm
3. luas jajargenjang=a.t
60=12.t
60÷12=t
5 m=t
4. luas segitiga=1/2×a×t
=1/2×14×10
=7×10
=70 cm
5. keliling segitiga sama sisi=3×s
=3×50
=150 cm
6. luas segitiga=1/2×a×t
42=1/2×a×7
42÷1/2÷7=a
84÷7=a
12 m=a
7. luas kue segitiga=1/2×a×t
=1/2×15×11
=7,5×11
=82,5 cm
8. keliling segitiga sama sisi=3×s
48=3×s
48÷3=s
16 cm =s
9.keliling segitiga sama kaki=a+2×s
44=16+2×s
44-16=2×s
28=2×s
28/2=s
14 cm=s
masing-masing sisi panjangnya 14 cm
10.keliling pigura sama sisi=3×s
=3×12
=36 cm
10 m=1000 cm
luas pigura=1/2×a×t
=1/2×12×1000
=6000 cm
11.luas jajargenjang=a×t
4500=90×t
4500÷90=t
50 cm =t
12.keliling jajargenjang=2(a+sisi miring)
46=2(15+sisi miring)
46=30+2sisi miring
46-30=2sisi miring
16÷2=sisi miring
8 cm=sisi miring
13. luas penggaris=1/2×a×t
=1/2×16×7
=56 cm
14. keliling jajargenjang=2(a+sisi miring)
=2(21+12)
=2(33)
=66 cm
15. luas segitiga=1/2×a×t
=1/2×50×5
=125 cm