## Ismaiel Kalady is teaching live on Unacademy Plus

MENSURATION OF 2D SHAPES 3 20 QUESTIONS AREA & PERIMETER TRICKS unacademy Follow my Profile for more classes, SMAIEL KALADY

Course Overvievw Basics of 2D Shapes V Area & Perimeter of all 2D Shapes How to remember Equations? V All Types of Problems Previous Year PSC Questions smaiel Kalady

6. The breadth of a rectangular hall is three-fourth of its length. If the area of the floor is 768 sq.m then the difference between the length and breadth of the hall is b) 12m a) 8m Ans: c) 24m d) 32m smaiel Kalady

6. The breadth of a rectangular hall is three-fourth of its length. If the area of the floor is 768 sq.m then the difference between the length and breadth of the hall is b) 12m d) 32m a) 8m Ans: Breadth is 34 of length, so let length be 4x, breadth will be 3x c) 24m Ismaiel Kalady

6. The breadth of a rectangular hall is three-fourth of its length. If the area of the floor is 768 sq.m then the difference between the length and breadth of the hall is b) 12m d) 32m a) 8m Ans: Breadth is 34 of length, so let length be 4x, breadth will be 3x c) 24m Area of Rectangle 4x x 3x 12 x2 768 sq.m 2_768 12 Ismaiel Kalady

6. The breadth of a rectangular hall is three-fourth of its length. If the area of the floor is 768 sq.m then the difference between the length and breadth of the hall is b) 12m d) 32m a) 8m Ans: Breadth is 34 of length, so let length be 4x, breadth will be 3x c) 24m Area of Rectangle 4x x 3x 12 x2 768 sq.m 768 12 2 144 x 648 Diference between lengtread8m Ismaiel Kalady

7. If the side of a square is increased by 25%, then its area is increased by: a) 25% Ans: b) 40% c) 55% d) 56.25% Ismaiel Kalady

7. If the side of a square is increased by 25%, then its area is increased by: a)25% b) 40% c) 55% Ans: Equation Method a+D+ 96 25 + 25 +25x25 % d) 56.25% 100 100 = 50 + 6.25 56.25% Ismaiel Kalady

7. If the side of a square is increased by 25%, then its area is increased by: a) 25% Ans: 25 % increase b) 40% c) 55% d) 56.25% 4 Original side 4, after increase 4+1 5 smaiel Kalady

7. If the side of a square is increased by 25%, then its area is increased by: a)25% Ans: 25 % increase b) 40% c) 55% d) 56.25% - Original side 4, after increase 4+1 5 Original Area42 16, Increased Area 52 25 25-16 % increase in area- x 100x 100 16 22 -56.25 % 16 Ismaiel Kalady

8. Each side of a rectangular field is diminished by 40%, by how much percent is the area of this field diminished? a) 32% Ans: Let Original Length & Breadth be l b) 64% c) 25% d) 16% 10 b 10 Area 100 After 40 % decrease 1-6 b 6 Area 36 Ismaiel Kalady

9. The length and breadth of rectangle are increased by 30% and 20% respectively, the area of the rectangle so formed exceeds the original area by b) 66% d) 56% a) 46% Ans: c) 42% smaiel Kalady

9. The length and breadth of rectangle are increased by 30% and 20% respectively, the area of the rectangle so formed exceeds the original area by b) 66% d) 56% a) 46% Ans: Let Original Length & Breadth be l c) 42% 10 b 10 Area 100 After 30 % and 20 % increase l = 13 b = 12 Area = 156 Increase % in Area = 156-100 = 56% Ismaiel Kalady

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