A and P of triangles and quads

The area of a triangle is given by $$Area=\frac{b\cdot h}{2}$$ , where b is the base and h is the height.

The area of a rectangle is given by $$Area=l\cdot w$$ , where l is the length and w is the width.

The perimeter of a rectangle is given by $$Perimeter=2(l+w)$$ , where l is the length and w is the width.

The area of a quadrilateral can be found using various methods depending on the type of quadrilateral, but a common formula is $$Area=\frac{1}{2}(d_1\cdot d_2)$$ for a kite, where d1 and d2 are the lengths of the diagonals.

The area is $$Area=\frac{10\cdot 5}{2}=25 cm^2$$ .

The area is $$Area=8\cdot 3=24 m^2$$ .

Using the area formula, $$30=\frac{10\cdot h}{2}$$ , so the height h is 6 cm.

The perimeter is $$Perimeter=2(10+4)=28 ft$$ .

The area is $$Area=\frac{12\cdot 4}{2}=24 cm^2$$ .

The length can be found using $$Area=l\cdot w$$ , so $$l=\frac{50}{5}=10 cm$$ .