Answers to Math Exercises: Perimeter and Area of Plane Figures 
P = 11.88 m, A = 8.82 m^{2}
A = 116.46 cm^{2}
P = 48 = 107.33 m, A = 640 m^{2}
117.36 m^{2}
a = 0.4 m, b = 1 m
P = 13.6 m
d_{2} = = 42.9 dm
A = 69.98 cm^{2}
h = 25 mm
h = 38.25 mm, d = 98.71 mm, A = 3,480.68 mm^{2}
A = 529.2 m^{2}, P = 191.5 m
a = b = 142 m, c = 190 m, A = 10,026.44 m^{2}
16 %
P = 8(2+) = 27.31 cm
A = 36 = 62.35 dm^{2}
α = 29°50', β = 134°43', γ = 15°27', A = 37.31 cm^{2}
P = 34.4, A = 43.2, α = 32°04', γ = 42°21'
a = 20.86, b = 55.31, c = 68.06, γ = 119°32'
d_{1} = 12.54 cm, d_{2} = 7.14 cm
A = 32 = 55.43 cm^{2}
a = 4 = 6.93 cm, A = 72 = 124.71 cm^{2}
P = 30π = 94.2 cm
A = 225π = 706.14 dm^{2}
A = 32(π–2) = 36.53 cm^{2}
A = 12π = 37.7 cm^{2}
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