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Երկրաչափություն

352

S=6a2

ա) a=2.1սմ

S=6*2.12

S=6* 4.41

S=26.46սմ2

բ) a=3.5մ

S=6*3.52

S=6*12.25

S=73.5մ2

353

ա) S=24սմ2

a2=24/6=4սմ2

բ) S=150դմ2

a2=150/6=25դմ2

356

a=6 սմ, b=7 սմ, c=8 սմ

ա) Sհիմք=a*b=42սմ2

բ) Sկողմ=2c(a+b)=16*13=208 սմ2

գ)S=2* Sհիմք+ Sկողմ=84+208=292

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