How to mark a brainliest
Answers
Explanation:
Answer:-
\red{\bigstar}★ \large\boxed{\tt\pink{Area = 616 \: cm^2}}
Area=616cm
2
\red{\bigstar}★ \large\boxed{\tt\pink{C.S.A = 1848 \: cm^2}}
C.S.A=1848cm
2
\red{\bigstar}★ \large\boxed{\tt\pink{T.S.A = 3080 \: cm^2}}
T.S.A=3080cm
2
\red{\bigstar}★ \large\boxed{\tt\pink{12936 \: cm^3}}
12936cm
3
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• Given:-
Base radius of a cylinder = 14 cm
Height of the cylinder = 21 cm
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• To Find:-
Area of the base
Curved surface area
Total surface area
Volume
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• Solution:-
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1.)
★ Area of Base:-
We know,
\pink{\bigstar}★ \large\underline{\boxed{\bf\green{Area = \pi r^2}}}
Area=πr
2
➪ \sf Area = \dfrac{22}{7} \times (14)^2Area=
7
22
×(14)
2
➪ \sf Area = \dfrac{22}{7} \times 196Area=
7
22
×196
➪ \sf Area = 22 \times 28Area=22×28
✯ \large{\bf\purple{Area = 616 \: cm^2}}Area=616cm
2
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2.)
★ Curved Surface Area:-
We know,
\pink{\bigstar}★ \large\underline{\boxed{\bf\green{C.S.A = 2 \pi rh}}}
C.S.A=2πrh
➪ \sf C.S.A = 2 \times \dfrac{22}{7} \times 14 \times 21C.S.A=2×
7
22
×14×21
➪ \sf C.S.A = 2 \times 22 \times 2 \times 21C.S.A=2×22×2×21
➪ \sf C.S.A = 44 \times 42C.S.A=44×42
✯ \large{\bf\purple{C.S.A = 1848 \: cm^2}}C.S.A=1848cm
2
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3.)
★ Total Surface Area:-
We know,
\pink{\bigstar}★ \large\underline{\boxed{\bf\green{T.S.A = 2 \pi r(h+r)}}}
T.S.A=2πr(h+r)
➪ \sf T.S.A = 2 \times \dfrac{22}{7} \times 14(21+14)T.S.A=2×
7
22
×14(21+14)
➪ \sf T.S.A = 2 \times 22 \times 2(35)T.S.A=2×22×2(35)
➪ \sf T.S.A = 44 \times 70T.S.A=44×70
✯ \large{\bf\purple{T.S.A = 3080 \: cm^2}}T.S.A=3080cm
2
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4.)
★ Volume:-
W know,
\pink{\bigstar}★ \large\underline{\boxed{\bf\green{Volume = \pi r^2 h}}}
Volume=πr
2
h
➪ \sf Volume = \dfrac{22}{7} \times (14)^2 \times 21Volume=
7
22
×(14)
2
×21
➪ \sf Volume = \dfrac{22}{7} \times 196 \times 21Volume=
7
22
×196×21
➪ \sf Volume = 22 \times 28 \times 21Volume=22×28×21
➪ \sf Volume = 616 \times 21Volume=616×21
✯ \large{\bf\purple{Volume= 12936 \: cm^3}}Volume=12936cm
3
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