Pls answer rn or else...

(5x10^3)x(9x10^7)=
(50^3)x(90^7)=
12500x47829690000000=
5978711250000000000

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .

For a 0.25 pfor b o.3pp (0.25+0.3)=0.28