jawab yaa nomer 3,4,6,7 pake cara!!

3. L= [tex] \frac{12+18}{2} [/tex] × 30
      = 450 CM²

4. L=[tex] \frac{24x 28}{2} [/tex]
      = 336 CM ²

6. BAD=CBA → 75 ° + 75° = 150 °
    BCD=ACD → N + N =n
    2N =(360° - 150° )
          =210 °
    N   = 210 °÷ 2
          = 105 °

7.PQ=QR→90°+90° = 180 °
   PRS= 60° + 180° = 240 °
   PSQ= 360°- 240°= 120° 


SEMOGA MEMBANTU