Question

7. The perimeter of a parallelogram whose parallel sides have lengths equal
to 12.5cm and 7.5 cm is:​

Answer 1

Answer:

h: height

For any parallelogram the following statements are true:

ab = dc

ad = bc

The perimeter of a parallelogram is therefore given by:  

P = 2 (ad + ab)

If the length of ad or bc is not given, it can be calculated by using the following formula:

ad = bc = h/cos(∠ecb)

where ∠ecb is the angle measured in degree or radian

∠ecb can be calculated if the length of eb is given:

∠ecb = tan-1(eb/h)

Answer 2

Answer:

perimeter of parallelogram = 2 x (l x b)

= 2 x (12.5 + 7.5)

= 2 x 20

= 40 cm is the perimeter of the parallelogram

Step-by-step explanation:

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