Question

7
The sides of a triangular plot are in the ratio of 3:5:7 and its perimeter
is 300m Find its cover.
(3)
Am and 3 m​

Answer 1

Answer:

Area of triangular plot = 5196.15m²

Step-by-step explanation:

sides of a triangular plot are in the ratio of 3:5:7

sides of a triangular plot are 3x, 5x, 7x

perimeter C = 300

3x+5x+7x = 300

15x = 300

x = 20

sides of a triangular plot 3x=60; 5x=100; 7x=140

Area of triangular plot,

s = (60+100+140)/2 = 300/2 = 150

A = √[s(s-a)(s-b)(s-c) = √[150(90)(50)(40) = 5196.15