EASY
9th Manipur Board
IMPORTANT
Earn 100

In a parallelogram ABCD, BC is of length 10 cm. The altitudes corresponding to the sides BC and AB are respectively 7 cm and 8 cm. Find length of AB.

Important Questions on Area

MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 9 - Area>EXERCISE 9.1>Q 2
P and Q are any two points lying on the sides DC and AD respectively of a parallelogram ABCD. Show that area of △APB=area of △BQC.
MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 9 - Area>EXERCISE 9.1>Q 3
If P, Q, R and S are respectively the midpoints of the sides of a parallelogram ABCD, show that area of quadrilateral PQRS=12(area of parallelogram ABCD).
MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 9 - Area>EXERCISE 9.1>Q 4
Prove that the line segment joining the midpoints of a pair of opposite sides of a parallelogram divides it into two parallelograms of equal area.
MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 9 - Area>EXERCISE 9.1>Q 5
Prove that three parallelograms formed by joining the midpoints of the three sides of a triangle are equal in area.
MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 9 - Area>EXERCISE 9.1>Q 6
Prove that, of all the parallelogram of given sides, parallelogram which is a rectangle has the greatest area.
MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 9 - Area>EXERCISE 9.1>Q 7
If O is an interior point of a parallelogram ABCD, prove that area of △AOB+ area of △OCD=12area of parallelogram ABCD.
MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 9 - Area>EXERCISE 9.1>Q 7
If O is an interior point of a parallelogram ABCD, prove that area of △AOB+ area of △OCD=area of △OAB+area of △OCD
MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 9 - Area>EXERCISE 9.1>Q 8
ABCD is a parallelogram and P is any point on the side CD. Prove that area of △APD+area of △BCP=area of △ABP.