Question
The boundary length (perimeter) of a semicircle is 72 m.
Find the area of a full circle whose radius is thrice the radius of that semicircle.Solution
ATQ,
Perimeter of the semi-circle = (π × radius) + 2 × radius = {(22/7) + 2} × radius = {(22 + 14)/7} × radius So, {(22 + 14)/7} × radius = 72 metres So, radius = 72 × (7/36) = 14 metres So, area of the circle with thrice the radius = π × 42 × 42 = (22/7) × 42 × 42 = 5544 m²
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Find the 31st term of the series 25, 29, 33……
632, 560, 494, 434, ?, 332
1331      1000            729       512       ?             216
...2556   636    156    ?    6
3 5 15 75 1125 ?
...1. In series II, if ‘x’ is the right term, then find which of the following statement(s) are true.
I. x/124 is a factor 6 and 8.
73920, 9240, ?, 220, 44, 11
12 78 385 ? 4629 9260
...A number series is given below, which follows a specific pattern. If 'A' represents the 'x'th term and 'B' represents ...
