[B] Answer the following in one word.
1) Write Euler’s formula.
2) Find the area of semicircle having diameter 14cm.
3) Give the expression for (8)-2 as a power with the base 2.
4) 1 m3 is equal to how many litre?
5) Give formula to find area of Rhombus .
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In figure there are three semicircles, A, B and C having diameter 3cm each, and another semicircle E having a circle D with diameter 4.5cm are shown. Calculate:
(i) the area of the shaded region
(ii)the cost of painting the shaded region at the rate of 25paise per cm2, to the nearest rupee.
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