Question
The radius of a circle is x meters, and the side of a
square is x + 5 meters. If the sum of the circumference of the circle and the perimeter of the square is 91.96 meters, find the area of the circle (in m²).( π = 3.14)Solution
Circumference of the circle = 2πx. Perimeter of the square = 4(x + 5). From the data: 2πx + 4(x + 5) = 90. Substitute π = 3.14: 2(3.14)x + 4x + 20 = 91.96 6.28x + 4x + 20 = 91.96. 10.28x = 71.96. x = 71.96 / 10.28. x = 7 meters. Area of the circle = πx². πx² = 3.14(7)². = 3.14 × 49. = 154 Correct option: a
Select the most appropriate ANTONYM of the bold word.
Technology plays an indispensable role in the lives of human beings in the 21st century....
A) demure B) criticize C) shy D) vandalize
...Pompous
In the following questions, choose the word opposite in meaning to the given word.
SACRED
Eminent
Capacious
In each of the following questions four words are given, of which two words are most nearly the same or opposite in meaning. Find the two words which a...
An ornament fastened to clothing with a hinged pin
Find the correctly spelt word .
trickle
