Question

4. Find the length of the sides of squares with the following perimeters.
i) 40 cm ii) 160 m
iii) 240 cm iv) 200 m

Answer 1

Answer:

i. 40 cm

From the question it is given that,

Area of a square park is the same as of a Rectangular park.

Side of the square park = 60 m

Length of the rectangular park = 90 m

We know that,

Area of the square park = (one of the side of square)2

= 602

= 3600 m2

Area of the rectangular park = 3600 m2 … [∵ given]

Length × Breadth = 3600

90 × Breadth = 3600

Breadth = 3600/90

Breadth = 40 m

Step-by-step explanation:

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Answer 2

Answer:

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume.[1]: 2 [2]: 622  The moving particles are called charge carriers, which may be one of several types of particles, depending on the conductor. In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or holes. In an electrolyte the charge carriers are ions, while in plasma, an ionized gas, they are ions and electrons