Odpowiedź:
Pprostokąta= a*b = 10cm*b=30cm²
b=3cm
3²+x²=5²
9+x²=25
x²=16
x=4
wzór na pole trapezu= (a+b)*h /2
P= (14cm+10cm)*3cm/2 = 72cm/2 = 36cm²
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Odpowiedź:
Pprostokąta= a*b = 10cm*b=30cm²
b=3cm
3²+x²=5²
9+x²=25
x²=16
x=4
wzór na pole trapezu= (a+b)*h /2
P= (14cm+10cm)*3cm/2 = 72cm/2 = 36cm²