Area of Quadrilaterals and Triangle

The correct formula for the area of a triangle is:

•  A=12bhA=\frac{1}{2}bhA=21​bh  

•  A=12xyA=\frac{1}{2}xyA=21​xy  

•  A=bhA=bhA=bh  

•  A=12h(a+b)A=\frac{1}{2}h\left(a+b\right)A=21​h(a+b)  

The correct formula for area of the kite is:

• A=12bhA=\frac{1}{2}bhA=21​bh

• A=12xyA=\frac{1}{2}xyA=21​xy

• A=bhA=bhA=bh

• A=12h(a+b)A=\frac{1}{2}h\left(a+b\right)A=21​h(a+b)

The correct formula for area of a parallelogram is:

• A=12bhA=\frac{1}{2}bhA=21​bh

• A=12xyA=\frac{1}{2}xyA=21​xy

• A=bhA=bhA=bh

• A=12h(a+b)A=\frac{1}{2}h\left(a+b\right)A=21​h(a+b)

The correct formula for area of the parallelogram is:

• A=12bhA=\frac{1}{2}bhA=21​bh

• A=12xyA=\frac{1}{2}xyA=21​xy

• A=bhA=bhA=bh

• A=12h(a+b)A=\frac{1}{2}h\left(a+b\right)A=21​h(a+b)

The correct formula for area of a rhombus is:

• A=12bhA=\frac{1}{2}bhA=21​bh

• A=12xyA=\frac{1}{2}xyA=21​xy

• A=bhA=bhA=bh

• A=12h(a+b)A=\frac{1}{2}h\left(a+b\right)A=21​h(a+b)

The correct formula is:

The correct formula for area of a trapezium is:

• A=12bhA=\frac{1}{2}bhA=21​bh

• A=12xyA=\frac{1}{2}xyA=21​xy

• A=bhA=bhA=bh

• A=12h(a+b)A=\frac{1}{2}h\left(a+b\right)A=21​h(a+b)

The correct formula for this trapezium area is:

• A=12bhA=\frac{1}{2}bhA=21​bh

• A=12xyA=\frac{1}{2}xyA=21​xy

• A=bhA=bhA=bh

• A=12h(a+b)A=\frac{1}{2}h\left(a+b\right)A=21​h(a+b)

The correct formula for area of the square is:

• A=12bhA=\frac{1}{2}bhA=21​bh

• A=12xyA=\frac{1}{2}xyA=21​xy

• A=12h(a+b)A=\frac{1}{2}h\left(a+b\right)A=21​h(a+b)

• A=s2A=s^2A=s2

The correct working for the area of this trapezium is:

• A=12×6×(10+9)A=\frac{1}{2}\times6\times\left(10+9\right)A=21​×6×(10+9)

• A=12×6×(7+7.5)A=\frac{1}{2}\times6\times\left(7+7.5\right)A=21​×6×(7+7.5)

• A=12×7×(10+9)A=\frac{1}{2}\times7\times\left(10+9\right)A=21​×7×(10+9)

• A=12×7.5×(10+9)A=\frac{1}{2}\times7.5\times\left(10+9\right)A=21​×7.5×(10+9)