find the total surface area of a right circular cylinder whose base has radius 7 cm and height 8 cm
Answers
Solution:
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To find:
The total surface area of a right circular cylinder.
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Radius of base= 7cm
Height= 8cm
Total surface area= 2πr(height+radius)
2×22/7×7(7+8)
2×22/7×7×15
660cm²
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Some important formulae:
- Perimeter of square= 4×side
- Perimeter of rectangle= 2×(l+b)
- Area of square= s×s
- Area of rectangle= l×b
- Length of rectangle= Area/Breadth
- Breadth of a rectangle= Area/Length
- Side of a square= √Area
- Area of a parallelogram= Base×Height
- Area of a triangle= 1/2×b×h
- Area of an equilateral triangle=
√3a²/4
- Area of a trapezium= 1/2×height×sum of parallel sides
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Answer:
To find:
The total surface area of a right circular cylinder.
________________________________
Radius of base= 7cm
Height= 8cm
Total surface area= 2πr(height+radius)
2×22/7×7(7+8)
2×22/7×7×15
660cm²
________________________________
Some important formulae:
Perimeter of square= 4×side
Perimeter of rectangle= 2×(l+b)
Area of square= s×s
Area of rectangle= l×b
Length of rectangle= Area/Breadth
Breadth of a rectangle= Area/Length
Side of a square= √Area
Area of a parallelogram= Base×Height
Area of a triangle= 1/2×b×h
Area of an equilateral triangle=
√3a²/4
Area of a trapezium= 1/2×height×sum of parallel sides
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Step-by-step explanation: