If the length of one side of and the degree measure of one angle of rhombus ABCD are 10 and 120度 respectively, what is the area of ABCD?
a)25 b)36根號2 c)50 d)50根號3 e)75
*他的10 and 120 度是什麼意思啊?
thanks.....
In a certain square ABCD, if the length of diagonal AC is 2, what is the area of ABCD?
a)1 b)2 c)8 d)8 e)10
A square garden, 64 square feet in area, is surrounded by a walking path that is 1 foot wide on two opposite 2 feet wide ont he other two sides. How many square feet is the total area of the garden and walking path?