Width of the rectangular piece of copper foil = 924/21 = 44 cm Since the foil is folded along its width to form a cylinder without any double layer, circumference of the cylinder formed = width of the rectangular foil Also, height of the cylinder so formed = length of the rectangular copper foil So, 2 × π × radius = 44 Radius of cylinder = 44 ÷ (2 × 22/7) = (44/44) × 7 = 7 cm So, volume of the cylinder so formed = π × (radius)2 × height = (22/7) × 7 × 7 × 21 = 3234 cm³
The embryos of seeds contain enzymes responsible for aiding germination. During germination detection test, these enzymes gives a brilliant red stain up...
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