Question

Q.1) Construct ∆XYZ in which XY = 4.5 cm, YZ = 5 cm and ZX = 6 cm. (4M)

(Write down steps also)

Q .2) Construct ∆PQR if PQ = 5 cm, m ∠PQR = 105° and m∠QRP = 40°. (4M)

(Hint: Recall angle-sum property of a triangle)

Q.3) A garden is 90 m long and 75 m broad. A path 5 m wide is to be built

outside and around it. Find the area of the path. Also find the area of the

garden in hectare. ( 4M )

Q.4) What should be taken away from 3x2 – 4y2 + 5xy + 20 to obtain

-x2 – y2 + 6xy + 20? (4M)

Q.5) What would you need to find, area or perimeter, to answer the following?



please help i can't understand​

Answer 1

Answer:

1.Draw a line segment XY of length 4.5cm

2.Taking 6cm as radius, and X as center, draw an arc.

3.Taking 5cm as radius, and Y as center, draw another arc.

4.Let Z be the point where the two arcs intersect.

Join XZ and YZ and label the sides.

Thus,△XYZ is the required triangle.