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3. A rectangle and a square have the same perimeter of 40 m.
(i) What is the length of the diagonal of the square.
(ii) If the rectangle has a breadth which is 4 m less than its length, them what are its dimension
4. Find the height and hence the area of equilateral
triangles with the following sides
(i) 6.4 cm
(ii) 10.8 cm

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Answer :

mrpill

Answer:

3.(i) 10√2m

(ii) 12m × 8m

4(i)20.48√3

(ii)29.16√3

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