If `h= 10 cm, c=6 cm, b= 12 cm, d=4 cm`, find the areas of each of its parts separately and addthen to find the area of WXYZ was it by putting the values of h, a and b in the expression `(h(a+b))/2`

If h=10 cm,c=6cm,b=12 cm,d=4 cm,find the values of each of its parts separately and add to find the area WXYZ.Verify it by putting the values of h,a and b in the expression (h(a+b))/2 .

Find the area of the triangle with base (b) = 12 cm and the corresponding height (h) = 8 cm .

The area of a parallelogram is y cm^(2) and its height is h cm. The base of another parallelogram is x cm more than the base of the first parallelogram and its area is twice the area of the first. Find, in terms of y, h and x, the expression for the height of the second parallelogram.

If the area of a triangle is 100 sq ,cm, r_(1)=10cm and r_(2)=50cm, then find the value of (b-a)

Find the area of the following: a. A square of side 21 cm b. A rectangle measuring 23 cm by 12 cm