4. What is the cost of fencing
(a) a rectangular field 80 m by 45 m if fencing costs 85.40 per metre?
(b) a square field with sides 57.5 m, when fencing costs 76.25 per metre?
(c) a triangular garden with sides 20.4 m, 63.8 m and 48.7 m, when fencing costs 39.80 per metre?
5. (a) The perimeter of a square is 80 m. What is the length of each side of the square?
(b) The perimeter of a rectangular card is 400 mm and its length is 6 cm. What is its breadth?
6. This rectangular block of land is to be enclosed with fencing panels 2.6 m long. How
39 m
many panels will be needed if one panel is left out to put in a gate?
7. A 1.8 m wide path is built around a rectangular pool 20 m long
Fig. 2.6
and 8.7 m wide. What is the distance around the outside of
8.7 m
(a) the pool? (b) the path?
20 m
Path
1.8m
Pool
Challenge! tutt
The sides of a triangle are consecutive integers. The perimeter of the triangle is 120 cm. Find the length of the
greatest side.
Answers
Cost of Fencing Found for Different Scenarios
Step-by-step explanation:
Perimeter of 80 m by 45 m = 2 ( 80 + 45) = 250 m
fencing costs 85.40 per metre
cost of fencing = 250 * 85.4 = Rs 21350
Perimeter a square field with sides 57.5 m, = 4 * 57.5 = 230 m
fencing costs 76.25 per metre
cost of fencing = 230 * 76.25 = Rs 17,537.5
Perimeter of a triangular garden with sides 20.4 m, 63.8 m and 48.7 m
= 20.4 + 63.8 + 48.7
= 132.9 m
fencing costs 39.8 per metre
cost of fencing = 132.9 * 39.8 = Rs 5,289.42
5. (a) The perimeter of a square is 80 m.
the length of each side of the square = 80/4 = 20 m
b) The perimeter of a rectangular card is 400 mm and its length is 6 cm.
6 cm = 60 mm
=> 2 ( 60 + b) = 400
=> 60 + b = 200
=> b =140 mm
b = 14 cm
Learn More:
What is the cost of fencing a circular place of radius 7.7 m with three ...
https://brainly.in/question/11762743
the cost of fencing a square at the rate of Rs 19.50 per metre is Rs ...
https://brainly.in/question/7621836
we want a around a rectangular plot. The fence costs ₹ 100 per ...
https://brainly.in/question/12338144
Answer:
I will not tell the amswer what u will do