Question

find the area of rombus where each side measure 20cm and one of its diagonal is 32​

Answer 1

Answer:

384cm^2

Step-by-step explanation:

D1 = 32cm

D1/2 = 32/2 = 16

D2/2 = 20^2-16^2= 144 = 12

so D2 = 12*2 = 24

So area = D1*D2/2

32*24/2 = 384 cm^2  

Answer 2

1. Draw a line segment BC=5 cm.

2. Draw a line segment XB making angle of 105˚ at B

3. With 4 cm as radius, draw an arc from B, name it as A.

4. Draw a line segment YC making angle of 80˚ using protractor at C.

5. With radius as 6.5 cm from C, cut the arc just drawn, name it as A.

6. Join AD.

7. ABCD is the required quadrilateral. 

8. Measure the length of AD=5.5 cm.