Find the ratio between whole surfaces of a sphere and a hemisphere?
A. 3:4
B. 4:3
C. 3:1
D. 1:3
4 πr2 : 3 πr2 => 4:3
Mathematics Mcqs
The curved surface of a sphere is 64 π cm2. Find its radius?
The curved surface of a sphere is 64 π cm2. Find its radius?
A. 1 cm
B. 2 cm
C. 4 cm
D. 3 cm
The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.
The slant height of a cone is 12 cm and radius of the base is 4cm, find the curved surface of the cone.
A. 74 π cm2
B. 36 π cm2
C. 48 π cm2
D. 24 π cm2
π * 12 * 4 = 48
The area of a base of a cone is 30 cm2. If the height of the cone is 6cm, find its volume?
The area of a base of a cone is 30 cm2. If the height of the cone is 6cm, find its volume?
A. 120 cm3
B. 40 cm3
C. 50 cm3
D. 60 cm3
πr2 = 30 h = 6
1/3 * 30 * 6 = 60
The radius of the base of cone is 3 cm and height is 4 cm. Find the volume of the cone?
The radius of the base of cone is 3 cm and height is 4 cm. Find the volume of the cone?
A. 12 π cm3
B. 6 π cm3
C. 8 π cm3
D. 10 π cm3
Find the ratio of the curved surfaces of two cylinders of same heights if their radii are in the ratio 1:2.
Find the ratio of the curved surfaces of two cylinders of same heights if their radii are in the ratio 1:2.
A. 1:2
B. 2:1
C. 1:4
D. 4:1
Two cylinders are of the same height. Their radii are in the ratio 1: 3. If the volume of the first cylinder is 40 cc. Find the volume of the second cylinder?
Two cylinders are of the same height. Their radii are in the ratio 1: 3. If the volume of the first cylinder is 40 cc. Find the volume of the second cylinder?
A. 360 cc
B. 60 cc
C. 300 cc
D. 36 cc
r1 = x r2 = 3x
Π * x2 * h = 40
Π9 x2h = 40 * 9 = 360
Find the expenditure on digging a well 14m deep and of 3m diameter at Rs.15 per cubic meter?
Find the expenditure on digging a well 14m deep and of 3m diameter at Rs.15 per cubic meter?
A. Rs.1185
B. Rs.1285
C. Rs.1385
D. Rs.1485
22/7 * 14 * 3/2 * 3/2 = 99 m2
99 * 15 = 1485
The radius of a cylindrical vessel is 7cm and height is 3cm. Find the whole surface of the cylinder?
The radius of a cylindrical vessel is 7cm and height is 3cm. Find the whole surface of the cylinder?
A. 308 sq cm
B. 220 sq cm
C. 440 sq cm
D. 132 sq cm
r = 7 h = 3
2πr(h + r) = 2 * 22/7 * 7(10) = 440
The diameter of a cylindrical tin is 6cm and height is 5 cm. Find the volume of the cylinder?
The diameter of a cylindrical tin is 6cm and height is 5 cm. Find the volume of the cylinder?
A. 30 π cc
B. 45 π cc
C. 150 π cc
D. 180 π cc
r = 3 h = 5
π * 3 * 3 * 5 = 45 π cc