Question

Construct the following quadrilaterals.
1. (a) ABCD in which AB = 4 cm, BC = 6 cm, CD = 5.5 cm, AD = 5 cm and AC = 8 cm.
(b) PQRS in which PQ = 3,5 cm, QR = 5.5 cm, RS = 4.5 cm, PS = 5 cm and PR = 7 cm.​

Answer 1

Answer:

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Answer 2

Answer:

answer of a is

Step-by-step explanation:

Given: AB = 4 cm, BC = 6 cm, CD = 5.6 cm, DA = 5 cm and AC = 8 cm.

To construct a quadrilateral

Steps for construction

Step 1 : Draw a rough figure and mark the given measurements.

Step 2 : Draw a line segment AB = 4 cm.

Step 3 : With A and B as centres draw arcs of radii 8 cm and 6 cm respectively and let them cut at C.

Step 4 : Join

AC

and

BC

Step 5 : With A and C as centres draw arcs of radii 5 cm, and 5.6 cm respectively and let them cut at D.

Step 6 : Join

AD

and

CD

. ABCD is the required quadrilateral.

Step 7 : From B draw

BE

⊥

AC

and from D draw

DF

⊥

AC

, then measure the lengths of BE and DF. BE = h

1

= 3 cm and DF = h

2

= 3.5 cm.

AC = d = 8 cm.

Calculation of area:

In the quadrilateral ABCD, d = 8 cm, h

1

= 3 cm and h

2

= 3.5 cm.

Area of the quadrilateral ABCD =

2

1

d(h

1

+h

2

)

=

2

1

(8)(3+3.5)

=

2

1

×8×6.5

=26cm

2