exercise 10.2 1st question
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The scan was not very clear but this is what I thought were the details:
Height of cylinder = 1.4m and radius of the base of cylinder = 56cm (or 0.56m)
Since this is a closed cylinder, we will need to calculate the total surface area which is given by the formula 2πR (R + H) where R is the radius and H is the height of the cylinder.
Using the values we have with us we get:
2πR (R + H) = [2×(22/7)×0.56] × (0.56+1.4) = 6.899m²
Height of cylinder = 1.4m and radius of the base of cylinder = 56cm (or 0.56m)
Since this is a closed cylinder, we will need to calculate the total surface area which is given by the formula 2πR (R + H) where R is the radius and H is the height of the cylinder.
Using the values we have with us we get:
2πR (R + H) = [2×(22/7)×0.56] × (0.56+1.4) = 6.899m²
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