Question

The wheel of an engine is of radius 28 m. Find the distance covered by it when it made 10 revolutions.
6. Simplify:(5y2 + xy -4x2) + (4y2 – 3x2 -6xy)
7. Cost of 2 cricket balls is RS. 120.8, Find the cost of 100 such cricket balls.
8. How much is a2 -2ab + 3b2 less than 2a2 -3b2 +ab?
9. Product of two rational numbers is 12/9. If one of them is 4/3 find the other.
10. 18 : 144 :: x : 144 ; find the value of x
11. If 25% of a number is 12. Find the number.

Answer 1

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