Question
If the area of a triangle is 1014 cm2 and
base: corresponding altitude is 3:4, then the altitude of the triangle is:Solution
Using the formula, Area of the triangle = 1/2 x base x height Β Let the base and altitude be 3x and 4x respectively. According to question, β 1/2 x base Γ altitude = 1014 cm2 or, β 1/2 x (3x) x (4x) = 1014 β 12x2 = 2028 β x2 = 2028/12 β x2 = 169 β x = β169 β x = 13 cm Altitude of a triangle = 4x = 4 Γ 13 cm = 52 cm
If the curved surface area and the radius of a cylinder are 880 cm2 and 28 cm, respectively, then find the volume (in cm3) of the ...
If the height of a cylinder is increased five times and radius is reduced by 40%, then what is the percentage change in its volume?
Each side of square βAβ is 4 cm less than that of square βBβ. The perimeter of a rectangle is 3 times the difference of the perimeters of the tw...
A tank whose length, width and height are 24 metres, 22 metres and 15 metres respectively is completely filled with juice. If the juice costs Rs.4/m
Area of a rectangle is equal to the total surface area of a hemisphere having volume 9826 cmΒ³ . Find the perimeter of the rectangle if its length is 12...
A frustum of a cone has radii of 8 cm and 5 cm, and the slant height is 13 cm. Find the total surface area of the frustum.
The length and breadth of a rectangle are increased by 35% and 40% respectively. The increase in the area of the resulting rectangle will be:
The total area of a circle and a square is 5450 cm2; the diameter of the circle is 70 cm, what is the difference between the circumference of...
The total cost of painting a wall at Rs 8 per sq.cm is Rs 2560. If the height of the wall is 32 cm, find the length of the wall.
A cylindrical drum has internal radius 2 m and height 3.5 m. Find its volume. Take Ο = 22/7.