A parallelogram is an enclosed figure with four sides. The parallelogram is a figure whose opposite sides are equal.
A triangle is a figure enclosed from three sides and comes with different properties that help show the congruence of triangles, like SAS, SSS, ASA, AAS, and many other terms.
It is given that base = 15 ft, and height = 3 ft
The specific formula for the area of parallelogram = base × height
= 15 × 3
= 45 ft^2
It is given that base = 20 ft, and height = 10 ft
The formula for the triangle area = ½ x base x height.
Now, put base = 20 and height = 10 in the above formula, i.e.,
= ½ x 20 ×10
= 100 ft^2