A shopkeeper charges ₹1.50 to photocopy a sheet of paper and a discount of 5.5% is given on all photo copies done after 400 sheets. How much will it cost to photocopy 800 sheets of paper?
If the perimeter of a circle is 88 cm, then what is the area of the circle? \(\left(\pi=\dfrac{22}{7}\right)\)
The value of \((86\div20)-\dfrac{13}{8}\,\text{of}\left(\dfrac{1}{3}-\dfrac{2}{13}\right)+\left(\dfrac{1}{8}\div\dfrac{3}{7}\right)+\left(2-\dfrac{3}{10}\right)\) is:
If a2 + 49b2 + c2 + 18 = 2(28b - c - a) then the value of (a + 7b - c) is:
The length of the base of a triangle is 3 cm smaller than the length of its altitude. Its area is 104 cm². What is the length of the base?
If \(\dfrac{\sin\theta+\cos\theta}{\sin\theta-\cos\theta}=3\), then the value of sin4 θ - cos4 θ is equal to:
\(\dfrac{1}{5}\)
\(\dfrac{2}{5}\)
\(\dfrac{3}{5}\)
\(\dfrac{4}{5}\)