Select the number from among the given options that can replace the question mark (?) in the following series.
20, 90, 210, 380, ?
ABC is a right angled triangle, right angled at C and p is the length of the perpendicular from C on AB. If a, b and c are the lengths of the sides BC, ...
If the ratio of the area of two similar triangles is √3:√2 then what is the ratio of the corresponding sides of the two triangles?
The area of a triangle is 216 cm² and the ratio of its sides is 9: 12: 15. What is the perimeter of the triangle?
If the angles of a triangle are in the ratio of 2:5:8, then find the value of the biggest angle.
In ΔPQR, PQ = 4 cm, QR = 3 cm, and RP = 3.5 cm. ΔDEF is similar to ΔPQR. If EF = 9 cm, what is the perimeter of ΔDEF?
The corresponding medians of two similar triangles are 12 cm and 15 cm. If the area of the first triangle is 288 cm, then find the area of the second tr...
Two triangles DEF and XYZ are similar to each other. If DE = 5 cm, DF = 7 cm, and XY = 15 cm, then find XZ.
The lengths of the three sides of a right-angled triangle are (x-1) cm, (x+1) cm and (x+3) cm, respectively. The hypotenuse of the right-angled triangle...
The base of a triangular plot is 25 meters, and its height is 30 meters. If a path of 2 meters wide is to be built around the plot, what will be the are...
A kite is in the shape of a square with a diagonal 24cm. attached to an equilateral triangle of the base 6cm. How much paper has been used to make it?
