Answer:
Step-by-step explanation:
sides =8 cm, 17 cm and 15 cm
Area of triangle by Hero's Formula,
S=a+b+c/2
S=17+8+15/2
S=40/2
S=20
A=
A=
A=
A=
A=60 
Step-by-step explanation:
4x-0=12
4x=12divide both sides by 4
x=3
Answer:
step 1
Step-by-step explanation: