Question

16. A wire is (7x - 3) metres long, A length of (3x - 4) metres is cut for use. Now, answer the following
questions:
(a) How much wire is left?
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Answer 1

Answer:

Given,

length of wire =(7x−3)m

and wire cut for use has length =(3x−4)m

Left wire =(7x−3)−(3x−4)=(4x+1)m

(b) Left wire =(4x+1)m

Perimeter of equilateral triangle = Length of wire left

⇒ 3×side=4x+1