Advertisements
Advertisements
Question
Find the perimeter of an equilateral triangle of side 9.8 cm.
Advertisements
Solution
The perimeter of equilateral triangle = 3 x side
= 3 x 9.8 cm
= 29.4 cm
APPEARS IN
RELATED QUESTIONS
The length of a rectangle is 16 cm and its perimeter is equal to the perimeter of a square with side 12.5 cm. Find the area of the rectangle.
A rectangular field is 30 m in length and 22m in width. Two mutually perpendicular roads, each 2.5 m wide, are drawn inside the field so that one road is parallel to the length of the field and the other road is parallel to its width. Calculate the area of the crossroads.
Find the perimeter of a rectangle whose:
length = 3.6 m and breadth = 2.4 m
Find the perimeter of an isosceles triangle with each equal side = 13 cm and the third side = 10 cm.
If A denotes area of a rectangle, l represents its length and b represents its breadth, find:
l, if A = 48 cm² and b = 6 cm
The cost of flooring a hall of ₹64 per square meter is ₹2,048. If the breadth of the hall is 5m, find:
(i) its length.
(ii) its perimeter.
(iii) cost of fixing a border of very small width along its boundary at the rate of ₹60 per square meter.
Find the cost of fencing a rectangular park of length 250 m and breadth 175 m at the rate of Rs. 12 per metre.
The length of a rectangle is three times its breadth. If its perimeter is 64 cm, find the sides of the rectangle
Find the perimeter of the following figure
There is a rectangular lawn 10 m long and 4 m wide in front of Meena’s house (see the figure). It is fenced along the two smaller sides and one longer side leaving a gap of 1 m for the entrance. Find the length of fencing.
