Question

pls answer fast i will mark u as a brainlist

Answer 1

hey firstly CSA of outer - CSA of inner =352
lat the outer radius be R and inner be r
2πRh- 2πrh=352
2πh(R-r)=352
2×22/7×14(R-r)=352
so by solving u get (R-r)=4cm
so R=4+r then
by dividing 3520 by 4 u will get 880
880 cm is the circumference.
so by putting R=r+4
u will get the value of r .
so by adding 4 into it u will get the outer radius as well as inner radius.
hope it will help you