Question

Traffic rules play a very important role in the traffic system of a country. These rules are made for avoiding traffic jams and accidents in cities and towns. In this order, a side wall of the Dwarka Das Park painted in black colour with a message, ‘TO FOLLOW THE TRAFFIC RULES’. If the sides of the wall are 8m, 9m and 11m respectively. See the figure given below and solve the following questions:
(i) Find the semi-perimeter of the triangle *
Captionless Image
12m
13m
14m
16m
(ii) Find the area (in sq m) of wall *
25.49
18.97
30.49
32.49
(iii) Which mathematical concept is used to solve the above problem? *
Area of parallelogram
Heron's formula
Surface area of cube
None of above​

Answer 1

Answer:

(i) 16m

(iii) Area of parallelogram

(ii) 30.49

Step-by-step explanation:

Answer 2

i 14

ii 32.49

iii Heron's formula

Step-by-step explanation:

SEMI PERIMETER = a+b+c/2

= 8+11+9/2

= 28/2

= 14 Answer...

ii the answer is 32.49...

iii. In those question we use HERON'S FORMULA

THANK YOU!!