grammar check the following text:

It is assumed that there’s no a specific base and height of the parallelogram backyard. Based on this decision, the base and height are set at 22m and 10m respectively to meet the allocated size of 220m2.

It is assumed that there is no specific base and height for the parallelogram backyard. Based on this decision, the base and height are set at 22m and 10m respectively to meet the allocated size of 220m2.