Question
A frustum of a cone has radii of 8 cm and 5 cm, and the
slant height is 13 cm. Find the total surface area of the frustum.Solution
The surface area of a frustum of a cone is given by: Surface Area = πl(r₁ + r₂) + π(r₁² - r₂²) Where l is the slant height, r₁ and r₂ are the radii of the two ends. Substitute the values: Surface Area = 3.14 × 13 × (8 + 5) + 3.14 × (8² - 5²) Surface Area = 3.14 × 13 × 13 + 3.14 × (64 - 25) Surface Area = 3.14 × 169 + 3.14 × 39 Surface Area = 3.14 × 208 Surface Area = 653.12 cm² Correct Option: d
Select the most appropriate option to fill in blank
Fill in blank 6 with the appropriate word from the options.
Fill in blank 43 with the most appropriate word.
Find the appropriate word.
In the following passage, some words have been omitted and indicated by a number. Select the most appropriate word from the given options pertaining to...
1) enlarges 2) broadens 3) swell up 4) e...
Find out the appropriate words.
5
Fill in blank 61 with the most appropriate word.
Find the appropriate word.
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