For the following questions answer them individually
Radii of two circles are 20 cm and 4 cm. Length of direct common tangent is 30 cm. What is the distance between their centres?
The following bar chart shows the quantity (in million kg) of grains exported by India from 2018-2022. By how much percentage is the minimum export less than the average export in the given period?
The bar graph given below shows the cost price and selling price of four articles J, K, L and M.
The average cost price of J and K together is how much percent more than the average selling price of L and M together?
In $$\triangle$$PQR, PN is the median on QR. If PN = QN, then what is the value of $$\angle$$QPR?
L is the incentre of $$\triangle$$ONP. If $$\angle$$OLP + $$\angle$$ONP = 195 degree, then what will be the value of $$\angle$$OLP?
If a + b + c = 0 and $$a^{2} + b^{2} + c^{2} = 40$$, then what is the value of ab + bc + ca?