Area MCQs

The radius of a circle is 20% more than the height of a right-angled triangle. The base of the triangle is 36 cm. If the area of triangle and circle be equal, what will be area of circle ?

The area of the largest circle, that can be drawn inside a rectangle with side 18 cm by 14 cm, is :

The area of two similar triangles are 12 cm² and 48 cm². If the height of the smaller one is 2.1 cm, then the corresponding height of the bigger one is :

A circle and a rectangle have the same perimeter. The sides of the rectangle are 18 cm and 26 cm. What is the area of the circle ?

The area of the four walls of a room is 120 m² and the length is twice the breadth. If the height of the room is 4 m, then the area of the floor is :

The total surface area of a right circular cylinder with radius of the base 7 cm and height 20 cm, is :

A big rectangular plot of area 4320 m² is divided into 3 square-shaped smaller plots by fencing parallel to the smaller side of the plot. However some area of land was still left as a square could not be formed. So, 3 more square-shaped plots were formed by fencing parallel to the longer side of the original plot such that no area of the plot was left surplus. What are the dimensions of the original plot ?

Of the two square fields, the area of one is 1 hectare while the other one is broader by 1%. The difference in their areas is :

The area of a rectangle is 252 cm² and its length and breadth are in the ratio of 9 : 7 respectively. What is its perimeter ?