40 lines
522 B
Go
40 lines
522 B
Go
package shapes
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import (
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"math"
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)
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type Shape interface {
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Area() float64
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}
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type Rectangle struct {
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Width float64
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Height float64
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}
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func (r Rectangle) Perimeter() float64 {
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return 2 * (r.Width + r.Height)
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}
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func (r Rectangle) Area() float64 {
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return r.Width * r.Height
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}
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type Circle struct {
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Radius float64
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}
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func (c Circle) Area() float64 {
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return c.Radius * c.Radius * math.Pi
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}
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type Triangle struct {
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Width float64
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Height float64
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}
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func (t Triangle) Area() float64 {
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return t.Width * t.Height * 0.5
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}
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