Mensuration1

• Mathematics
• Secondary Education

Quadrilateral

www.geogebra.org

MENSURATION

www.geogebra.org

1) Which familiar shape you got?
2) What is the formula to find area of new figure?
3)Apply the formula to find the area of parallelogram

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

Answer...

TASK 1

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

TASK 2

1. 54 sq feet
2. 56 sq feet
3. 106 sq feet
4. 150 sq feet

TASK 3

1. 5 bags, 150 Rs
2. 4 bags, 130 Rs
3. 10 bags, 200 Rs
4. 4 bags, 120 Rs

ASSET

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

ASSET ANSWER

1. 19 sq cm
2. 12 sq cm
3. 18 sq cm
4. 20 sq cm

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.