From a solid right circular cylinder of height 2.4 cm and radius 0.7 cm, a right circular cone of same height and same radius is cut out. Find the total surface area of remaining solid.
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calculate L = √ h² + r²
put value of r, h and L in the formula
2πrh + πr2² + πrl
calculate L = √ h² + r²
put value of r, h and L in the formula
2πrh + πr2² + πrl
Aizakhan234:
What will be the answer??
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1
Answer:
height of cylinder = 2.4 cm
radius = 0.7 cm
height of cone = height of cylinder = 2.4cm
radius of cone = radius of cylinder = 0.7 cm
TSA of remaining solid = 2πrh + πrl + πr²
= πr ( 2h + l + r )
=22/7 * 0.7 ( 2*2.4 + 0.5 + 0.7)
=2.2(4.8+1.2)
=2.2(6)
=13.2cm²
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