Bissoy.com
Doctors Medicines MCQs Q&A

  1. 388.88 ft2
  2. 342.88 ft2
  3. 363.88 ft2
  4. 355.56 ft2
5 views

1 Answers

Option 2 : 342.88 ft2

Given:

Frustum of a cone whose larger and smaller radius is 12.2 ft and 8.8 ft.

The slant height is 5.2 ft.

Formula Used:

CSA of frustum of cone = π (R + r) × l

R = larger radius

r = smaller radius

Where l = slant height of the frustum

Calculation:

[ alt="F1 Abhishek Madhu 13.07.21 D5" src="//storage.googleapis.com/tb-img/production/21/07/F1_Abhishek_Madhu_13.07.21_D5.png" style="width: 155px; height: 162px;">

CSA of the frustum of a cone = π ( 12.2 + 8.8 ) × 5.2

= 3.14 × 21 × 5.2

= 342.88 ft2

5 views

Related Questions

Given below are three quantities named 1, 2 and 3. Based on the given information, you have to determine the relation among the three quantities. You should use the given data and knowledge of Mathematics to choose between the possible answer. The options represent the relations among three quantities. A. < B. > C. ≤ D. ≥ E. = Quantity 1: There is a square field of side 4 meter. A flower bed is to be prepared in its centre, leaving a gravelled path of uniform length around the flowerbed. The cost of preparing the flowerbed and gravelling the path is Rs. 100 and Rs. 200 per square meter respectively. If the total cost is Rs. 1756 then find the double of  width of gravelled path. Quantity 2: The height of a cone is 45 cm. A small cone is cut from it parallel to the base. If the ratio of volume of small cone and the remaining part is 8 : 19 then what is the height from the base from where the cone was cut Quantity 3: A cylindrical container of radius 60 cm and height 150 cm is filled with ice cream. 10 cones of equal volume need to be prepared from the whole ice-cream. These cones has hemispherical top and the height of the conical portion is 4 times the radius of hemisphere. Find radius of the hemisphere. ?
1 Answers 6 Views
“What is the different between height and radius of solid cylinder” Which of the following option is sufficient alone to find the answer A) A solid cylinder is made by melting a solid sphere. The radius of cylinder is 3 times the radius of a circle whose area is 154 sq.m. Height of cylinder is equal to the height of cone whose volume is 2772 cubic meters. B) Area of a rectangle whose longer side is ¾ times the radius of a solid cylinder, is 168 sq.m and, Volume of solid cylinder is 2772 cubic meters and its height is 18 m. C) A metallic cone of radius 15m and height 35m is melted into the solid cylinder of radius equal to the radius of a circle whose area is equal to the area of rectangle whose sides are in the ratio 4 : 3 respectively. D) The curved surface area of the solid cylinder is 3 time the surface area of a sphere of radius 7m and height of cylinder is equal to the height of a metallic cone whose curved surface area is 308 sq.m. ?
1 Answers 8 Views