Question
Find the length of the side of a regular octagon which
is formed by cutting the corner of square of side 20 cm?Solution
Let the sides of regular octagon be a. a² = x² + x² a² = 2x² x² = a²/2 x = a/√2 x + a/√2 + a = 20 a/√2 + a/√2 + a = 20 a(√2+1) = 20 ∴ a = 20/(√2+1) ⇒ a = 20(√2-1)
Surge Irrigation is the modification of which type of irrigation?Â
Which one of the following chemical is most effective in managing downy mildew diseases:
An agricultural region receives less than 500 mm of rainfall annually. The region is located in ____________ climatic zone and farmers might f...
Holometabolous development is found in _______:
Scientific name of soybean is:Â
Which of the following crops would *not* be typically classified under horticultural crops?
In which part of insect body, Johnston's organs are present?
Immediate and ultimate source of nitrogen is
Iron is absorbed by plants in which of the following forms?
(a)Â Fe2+
(b)Â Fe4+
(c)Â Fe
(d)Â Fe3+
Pusa Deepali is a variety of:
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