For the following questions answer them individually
If the radius of a sphere is increased by 2 cm, then its surface area increases by 352 $$cm^2$$. The radius of the sphere initially was: (use $$\pi=\frac{22}{7}$$)
The ratio of two numbers is 3: 4 and their HCF is 15. Then the sum of the two numbers is:
A shopkeeper fixes the price of an article at 30% higher than its actual cost. If he sells it at 10% discount on marked price then, the profit is:
The three successive angles of a cyclic quadrilateral are in the ratio 1:3:4, find the measure of the fourth angle ?
If the Cost Price of 25 chairs is equal to the Selling Price of 30 chairs, then the loss % is:
The liquids, X and Y are mixed in the ratio of 3: 2 and the mixture is sold at ₹11 per litre at a profit of 10%. If the liquid X costs ₹2 more per litre then Y, the cost of X per litre is (in ₹):
The value of the expression $$Sin^{2}1^\circ+Sin^{2}11^\circ+Sin^{2}21^\circ+Sin^{2}31^\circ+Sin^{2}41^\circ+Sin^{2}45^\circ$$
$$+Sin^{2}49^\circ+Sin^{2}59^\circ+Sin^{2}69^\circ+Sin^{2}79^\circ+Sin^{2}89^\circ$$
The average of 8 numbers is 21. If each of the numbers is multiplied by 8, the average of the new set of numbers is
If Cos A + Sin A = $$\sqrt{2}$$ Cos A then Cos A- Sin A is equal to: (Where $$0^\circ$$<A<$$90^\circ$$)
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