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A quarter circle represents a piece of land. The length of the straight sides is 100 ft each. If the land is enclosed by a fence, what is closest to the length, in feet, of the fence?

Perimeter of a quarter circle = (2πr)/4 r = 100ft P = (2πr)/4 = (2×3.14×100)/4 = 157 Because we are calculating the length of the fence – as the fence goes around the land – for the two straight sides - the ...
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Answered by Gift W. • Maths tutor
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Explain the process of allopatric speciation

A population of one species is separated by a physical barrier, e.g a geographical barrier such as the movement of tectonic plates. There will then be 2 isolated groups of the same species unable to interbre...
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Answered by Matthew S. • Biology tutor
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Name 3 features of a plant cell not found in an animal cell

Plant cells have chloroplasts, a vacuole and a cell wall.
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Answered by Matthew S. • Biology tutor
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Name 5 components of the cell

Nucleus, mitochondria, ribosome, cytoplasm, cell membrane.
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Answered by Matthew S. • Biology tutor
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Describe covalent bonding

Covalent bonding is the sharing of electrons between 2 or more non metals.
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Answered by Matthew S. • Chemistry tutor
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