Q22 of 31 Page 232

DE is perpendicular on side AB from point D of parallelogram ABCD and BF is perpendicular on side AD from the point B; if AB = 10 cm, AD = 8 cm and DE = 6 cm, let us write how much length of BF is


Area of parallelogram ABCD = Base × Height


= DE × AB


= 6 cm × 10 cm = 60 cm2


Also area of parallelogram ABCD = Base × Height


= BF × DC


DC = AB ∵ opposite sides of parallelogram


= BF × 10 cm


= 60 cm2


BF = = 6 cm


More from this chapter

All 31 →
21

D is the midpoint of side BC of triangle ABC. E is the midpoint of side BD and O is the midpoint of AE; area of triangular field BOE is

 21

A parallelogram, a rectangle and a triangular region stand on same base and between same parallel and if their area are P, R and T respectively then

 22

The area of the parallelogram shaped region ABCD is 100 sq units. P is midpoint of side BC; let us write how much area of triangular region ABP is.

 22

AD is the median of triangle ABC and P is any point on side AC in such a way that area of triangle ADP : area of triangle ABD = 2 : 3. Let us write area of triangle PDC : area of triangle ABC.