An isosceles triangle has congruent sides of 20cm. the base is 10cm. what is the area of the triangle?

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab

Write the pair of fractions as a pair of fractions with a common denominator

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2