find the area of the following figure
with full sum and formula if no
you are poor
Answers
hey kindly refer to attachment.
Question :------ we have to find area of following figure ..
Given :------
- Perpendicular1 distance from diagonal = 3 cm
- Perpendicular2 distance from diagonal = 3 cm
- Diagonal of Quadrilateral = 12cm .
Solution :--------
we can solve this in 2 ways ...
method (1)
first we find area of both ∆s and than add them , we get area of quadrilateral ...
we know that , area of ∆ is given by = 1/2 * Base * perpendicular Height .
Here base of both ∆'s = Diagonal of Quadrilateral = 12cm
and Height of Both ∆'s also same = 3 cm .
so, both ∆ have Equal area .
area of ∆ = 1/2 × 12 × 3 = 18cm²
area of both ∆'s = 18×2 = 36cm²
so, Area of Quadrilateral = Area of both ∆'s = 36cm² (Ans)
______________________________
method (2)
we know that , Area of Quadrilateral =
1/2 × ( sum of perpendicular distance between diagonal on both corners ) × length of diagonal .
so,
Area of quadrilateral = 1/2 × (3+3) × 12 = 1/2 × 6 × 12 = 36cm² (Ans)
(Hope it helps you)