Mensuration 2

• Mathematics
• Secondary Education

Entry Ticket....
1) Rectangle is quadrilateral (True/false)
2) Area of rectangle whose length is 4 cm and height is 9 cm

Quadrilateral

www.geogebra.org

Mini plenary

If the parallelogram's base and area are known, how can the height be determined?

1. A= Base x Height
2. Height= Base x Area
3. Height =Area/Base
4. Height= Base/Area

TASK 1

1. 20 sq cm
2. 15 cm
3. 25 sq cm
4. 15 sq cm

TASK 2

1. 100 feet
2. 10 feet
3. 250 feet
4. 20 feet

TASK 3

1. 54 Sq feet
2. 45 sq feet
3. 40 sq feet
4. 70 sq feet

ASSET

A parallelogram inside a rectangle. What is the area of parallelogram?

AFL: Area of parallelogram =

Brianna won a parallelogram-shaped trophy. She knows the area of a parallelogram is 735 cm2 and that its base is 35 cm. What is the trophy’s height?

1. 21cm
2. 20 cm
3. 40 cm
4. 70 cm

Extension task

Research work

Which is the commercial office tower has a sleek and slender design, rising from a parallelogram-shaped site in UAE.

1)Meena’s backyard is in the shape of a parallelogram. The base and height of Meena’s backyard is 25 m and 4 m respectively. She goes to the store to buy grass seed and discovers that each bag of seed costs Rs.30 and it covers 25 sq.m. How many bags of seed will Meena need in order to cover her backyard in grass seed? What will be the total cost?