This is not an equilateral triangle if height is 4 m
the base is 6 m and by Pythagorean theorem the other sides are 5 m
perimeter is 6 + 5 + 5 = 16m
Area = base x height = 6 x 4 = 24 sq m
The 'upside down' triangle symbol is the (greek?) letter Nabla. Nabla means the gradient. The gradient is the vector field whoose components are the partial derivatives of a function F given by (df/dx, df/dy).
191214
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No one, not the place to ask btw.
The adjective form of who is spelled whose. The spelling of the contraction is who's meaning "who is."
TCS TCS
DAISY! Ambre looks very old!
Black hole
Mention a plant whose and seeds are used as food
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She liked the name harry and the potters were a family who lived in her street so she "borrowed" the name.
Montana