Question

Buna! Va rogg ajutati-ma rapiddd ex acesta Dau coroana inima rate de toateeeeeeeeeeeeeee
Rezolvare de clasa 8 ​

Answer 1

ABCD trapez isoscel AB ll CD

R=6cm r=2cm i =8√2cm

a)h =i=8√2cm

b)G=CB din ∆CTB dreptunghic

CT=h TB=R -r=6-2=4cm

t.p. G=√CT²+TB²=√(8√2)²+4²=4√2cm

G=4√2cm

c)x>AC=√(AB²+CT²)=√[(2R)²+i²]=

√144+64×2=4√17cm≈16cm

x=AE+FC=6+11,5=17,5cm

FC=√r²+i²=√4+64×2=11,5cm

x≈12cm

c) nu este sigur