Question
The total surface area of a cylinder is 2,200 cm². If
its radius is 7 cm and height is expressed as (k + 13), then find the value of ‘k²’. (Use π = 22/7)Solution
ATQ,
TSA = 2πr(h + r) 2200 = 2 × (22/7) × 7 × ((k+13) + 7) 2200 = 44(k + 20) k + 20 = 50 k = 30 k² = 900
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