A floral design on a floor is made up of 16 tiles which are triangular, the sides of the triangle being 9cm, 28cm and 35cm. Find the cost of
polishing the tiles at the rate of 50p per m^2?

Answer

Area of tiles = 16 x area of 1 Δ

S=  

2

a+b+c

=  

2

9+28+35

=  

2

72

=36

Area=  

36(36−9)(36−28)(36−35)

36×27×8×1

36  

6

cm  

2

Area of tiles = 16 ×36  

6

=1410.20.

Cost of polishing per cm  

2

 = 50.

Cost of polishing = 1410.90 cm  

2

1410.90 x  

2

1

705.45

Step-by-step explanation:

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation: