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Mathematics 7 Online
OpenStudy (anonymous):

Find the area of an equilateral triangle with apothem 7 cm.

ganeshie8 (ganeshie8):

draw it out

ganeshie8 (ganeshie8):

remember, equilateral triangle is just a regular polygon. so apothem is simply the perpendicular distance from center to its sides

OpenStudy (anonymous):

|dw:1376160893031:dw|

ganeshie8 (ganeshie8):

looks good :) now, the task is to find area of this triangle wat do we need to find area of triangle ?

ganeshie8 (ganeshie8):

|dw:1376161045928:dw|

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