Question

Give answer to the first question only
Rest questions you can hv for ur practice lol
Btw answer the first question fast

Answer 1

simple put the values in the formula
h(height)=45cm
R(bigger radii)=28cm
r(smaller radii)=7cm
=> l(slant height)=root[(R-r)^2+(h)^2] =root[(28-7)^2+(45)^2] =root[(21)^2+2025] =root[441+2025] =root[2466] =49.65(approx)
C.S.A =pie(r+R)l
T.S.A =pie(r+R)l+pie (r^2+R^2)
Volume =(1/3)×pie×h×[r^2+R^2+rR]