Question

E = {x : x = 4n, ne N) and F = {x : x = 9n, n = N).
Hint : 36 e E and 36 EF.​

Answer 1

height(H)=120cm

\sf\dashrightarrow \blue{diameter of roller= 84cm}⇢diameterofroller=84cm

\sf\therefore \blue{radius= \dfrac{diameter}{2}}∴radius=

2

diameter

\sf\dashrightarrow \blue{ \dfrac{84}{2}}⇢

2

84

\sf\dashrightarrow \blue{\cancel \dfrac{84}{2}}⇢

2

84

\sf\dashrightarrow \blue{radius= 42cm}⇢radius=42cm

\large\underline\mathfrak{\purple{TO\:FIND,}}

TOFIND,

\sf\dashrightarrow \red{AREA\: OF\:PLAYGROUND }⇢AREAOFPLAYGROUND

FORMULA

\rm{\boxed{\sf{ \circ\:\: C.S.A\: OF\: CYLINDER= 2 \pi rh \:\: \circ}}}

∘C.S.AOFCYLINDER=2πrh∘

\large\underline\mathtt{\purple{SOLUTION,}}

SOLUTION,