tell me the answers.........
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1.P=32
a=8
b=11
c=?
a+b+c=2s=P
8+11+c=32
19+c=32
c=32-19
c=13
2.h=3b
b=b
A=54cm²
A=1/2×3b×b
54*2=3b2
108=3b2
108/3=b2
36=b2
b=6
h=3*6
h=18
3.a=18
b=10
A=1/2*10*18
=>5*18
=>90cm²
4.12x+17x+25x=540
54x=540
x=10
12*10=120
17*10=170
25*10=250
Step-by-step explanation:pz mark me as brainliest
sorry i am not having enough time
i will answer in the comments
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