How to find area - ISEE Upper Level (grades 9-12) Quantitative Reasoning
Card 0 of 1
Question
The above rectangle, which has perimeter 360, is divided into squares of equal size. Give the area of the shaded portion.
The above rectangle, which has perimeter 360, is divided into squares of equal size. Give the area of the shaded portion.
Answer
The sides of the rectangle, in total, are divided into 18 segments of equal measure, as indicated below:
The rectangle has a total perimeter of 360, so each segment - one side of a square - measures 
. Each square has area 
, so the shaded portion of the rectangle, which comprises seven squares, has area
.
The sides of the rectangle, in total, are divided into 18 segments of equal measure, as indicated below:
The rectangle has a total perimeter of 360, so each segment - one side of a square - measures
Compare your answer with the correct one above
Tap the card to reveal the answer