Question

12. Write the formula for finding the area of a General Quadrilateral.
13. Area of a rhombus whose sida ir 5 cm​

Answer 1

Answer:

12 If the diagonal and the length of the perpendiculars from the vertices are given, then the area of the quadrilateral is calculated as: Area of quadrilateral = (½) × diagonal length × sum of the length of the perpendiculars drawn from the remaining two vertices

Step-by-step explanation:

rhombus is also a parallelogram

Area of rhombus=base\times heightbase×height

Base=5cm

Height=4.8cm

Area=5cm\times4.8cm5cm×4.8cm

=24cm^2=24cm

2

Also d_1=8cm\ \ d_2=?d

1

=8cm d

2

=?

Area of rhombus=\frac{1}{2}\times product\ of\ diagonals

2

1

×product of diagonals

24=\frac{1}{2}\times8\times d_2

2

1

×8×d

2

24=4\times d_24×d

2

d_2=\frac{24}{4}d

2

=

4

24

=6cm

Hence,length of other diagonal is 6cm