Area Problems The area of a circle of radius 5 is numerically what percent its circumference? 450% 250% 350% 150% 450% 250% 350% 150% ANSWER DOWNLOAD EXAMIANS APP
Area Problems A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 680 sq. feet, how many feet of fencing will be required? 88 40 68 34 88 40 68 34 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP We have: l = 20 ft and lb = 680 sq. ft. So, b = 34 ft. ∴ Length of fencing = (l + 2b) = (20 + 68) ft = 88 ft
Area Problems The ratio of the area of a square to that of the square drawn on its diagonal is 2;3 4:1 1:2 3:1 2;3 4:1 1:2 3:1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP atio = a 2 2 a 2
Area Problems The question given below contain two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the question ? Question : What is the height of a right-angled triangle ? Statements : A. The area of the triangle is 20 times its base. B. The perimeter of the triangle is equal to that of a square of the side 10 cm. Only statement A is required Neither (A) nor (B) is reuired Only statement B is required Both A & B are required Only statement A is required Neither (A) nor (B) is reuired Only statement B is required Both A & B are required ANSWER EXPLANATION DOWNLOAD EXAMIANS APP From statement (A), 20b = (1/2) × b × h h = 40 cm.
Area Problems The ratio of the area of the circumcircle and the incircle of a square is 1 : 2 1 : ?2 2 : 1 ?2 : 1 1 : 2 1 : ?2 2 : 1 ?2 : 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Ratio of the areas of the circumcircle and incircle of a square = [(Diagonal)2?] / [(Side)2?]= [(Side x ?2)2] / (Side)2 = 2/1 or 2 : 1
Area Problems The lengths of three line segments (in cm) are given in each of the four cases. Which one of the following cases is not suitable to be the three sides of a triangle? 2, 4, 5 3, 4, 5 2, 3, 5 2, 3, 4 2, 4, 5 3, 4, 5 2, 3, 5 2, 3, 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP We know that in any triangle "the sum of two sides is always greater than its third side" and "the difference of two sides is always less than its third side".(i) 2 + 3 is not greater than 5 (ii) |5 - 2| not less than 3
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