Question

7. Three angles of a quadrilateral are in the ratio 1:5:6. The mean of these angles is 80°. Find
all the four angles.
& The perimeter of a parallelogram is 110 cm. One of its sides is 5 cm less than the other. Find
the length of all the sides of the paraorallologram​

Answer 1

$\huge \bf \red{1st \: Question:}$

Three angles of a quadrilateral are in the ratio 1:5:6. The mean of these angles is 80°. Find

all the four angles.

$\huge \bf \red{Answer: }$

Refer to the attachment!

$\huge \bf \red{2nd \: Question:}$

The perimeter of a parallelogram is 110 cm. One of its sides is 5 cm less than the other. Find

the length of all the sides of the paraorallologram

$\huge \bf \red{Answer: }$

Area of parallelogram = Base × Height

One side of parallelogram = 5cm

Let another side of parallelogram = x

110 = 5 × x

110 = 5x

Divide 5 on both sides

110 ÷ 5 = 5x ÷ 5

22 = x

Value of x = 5

Another side of parallelogram = 5