Question

the area of trapezium is 660 cm square and the length of one parallel side is 25 cm if its height is 40 cm find the length of other parallel side​

Answer 1

Answer:

25*40 - 1000 now just Minus it from 1000

Step-by-step explanation:

25*40-1000

1000-660

Answer 2

Given:

• Area of trapezium = 660${cm}^{2}$
• Length of one parallel side = 25 cm
• Height of trapezium = 40 cm

To Find:

• Length of the other parallel side = ?

Solution:

Let's say,the other parallel side of trapezium be x.

Formula to find the Length of the other parallel side—

${\quad}{\bigstar{\boxed{\bold{area = \frac{1}{2} \times (sum \: of \: parallel \: side) \times height}}}}$

According to the question —

$\sf \implies \: 660 = \frac{1}{ \cancel2} \times (25 + x) \times \cancel4 \cancel0 \\ \\ \sf \implies \: 660 = (25 + x) \times 20 \\ \\ \sf \implies \: 660 = 500 + 20x \\ \\ \sf \implies \: 660 - 500 = 20x \\ \\ \sf \implies \: 160 = 20x \\ \\ {\implies{\boxed{\mathfrak{x = 8}}}}{\bigstar}$

Therefore,

• The other side = x = 8 cm.