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
- From the options given below, select the option which states the correct combination of incorrect sentences.
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In the question given below, a sentence is given, divided into parts. One of the parts may contain an error. Identify the part that contains t...
Despite of all the importance attached to water, there has been no effective mechanism adopted to prevent its pollution.
...Find the appropriate word.
