1 the answer to the PHS polygon area of the fifth grade mathematics in class.

Question 5: Find the length of the other side of two parallelograms with the height of 8dm 6dm and the base of 15dm.

The area of parallelogram is

15× 8 = 120 (square decimeter)

The other side is long.

120 ÷ 6 = 20 (decimeter)

Question 6: The parallelogram vegetable field, whose bottom height is 240m or125m? 7380 kilograms of rapeseed were harvested in this field. How many kilograms of rapeseed is harvested on average per square meter?

The area of parallelogram is

240× 125 = 30000 (m2)

Average rape harvest per square meter

7380 ÷ 30000 = 0.246 (kg)

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