If the length of the diagonal of a square is 20cm,then its perimeter must be
a. 402cm b. 302cm c. 10cm d. 152cm
We know that d=√2s
Given diagonal = 20 cm
=> s = 20/2 cm
Therefore, perimeter of the square is 4s = 4 x 20/2 = 402 cm.
What is the ratio of radius of incircle and circumcircle for an equilateral triangle with an area of 22√3 sq. units?
View Answer Report Error Discuss
The circumference of a circle is 66 cm. Find its radius (in cm).
If the length of one side and the diagonal of a rectangle are 10 cm and 26 cm respectively, then find its perimeter (in cm).
In ΔDEF measure of angle E is 90°. If cosD = 8/17, and DE = 16cm, then what is the length (in cm) of side DF?
Find the area (in cm²) of a semi-circle of radius 21 cm.
The length of one side and the diagonal of a rectangle are 7 cm and 25 cm respectively. Find its area (in cm²)
In a triangle ABC, the length of in-radius and circum-radius is 2 units and 6 units respectively. Find the distance (in units) between the in-centre and circum-centre.
The ratio of the areas of a square and a regular hexagon, both inscribed in a circle is?