Q.20 If the total surface area of a cube is 96 cm2 , then find the volume of the cube.
Ans .,, 1. 64 cm3
X 2. 82cm 3
X 3. 27 cm 3
X 4 . 74cm 3
Q.21 Find the surface area of a cuboid 17 m long, 8 m broad and 3 m high.
Ans X 1. 420 m 2
X 2. 411 m2
X 3. 402 m2
. ; 4. 422 m 2
Q.15 The total surface area of a solid hemisphere Is 16632 cm 2. Its volume Is: (Take n-=22/7)
Ans X 1. 145232 cm3
X 2. 140232 cm3
X 3. 150032 cm3
~ 4. 155232 cm3
Q.18 What Is the volume of the largest right circular cone that can be cut out from a cube
whose edge Is 1Ocm?
Ans 250 n
.,, 1 cm 3
3
351n
x 2. cm 3
3
145n
X 3. cm 3
3
150n
X4 . cm 3
3
Q.8 As air is pumped into a spherical balloon, its radius increases from 7 cm to 14 cm.
Find the ratio of volume of the balloon's in both circumstances.
Ans X 1. 2 : 5
X 2. 1 : 9
.., 3. 1 : 8
X 4. 3 : 1
Q.3 22
Find the surface area of a sphere of diameter 21 cm. (Use Tt = -)
7
@Qmaths
Ans X 1. 988 cm 2
X 2 . 1234 cm2
X 3 . 1445 cm2
. , 4. 1386 cm 2
Q.10 Find the total surface area of a cuboid whose length is 20 cm, width is 15 cm, and
height is 8 cm.
Ans ~ 1. 11 60 cm 2
X 2 . 990 cm 2
X 3 . 1120 cm 2
X 4 . 1080 cm 2
Question ID : 2
Status : ~
Chosen Option : 1
Q.11 The diagonal of a cube is 24 cm. Find its total surface area.
Ans ~ 1. 1152 cm 2
X 2 . 1252 cm 2
X 3 . 1100 cm2
X 4 . 1366 cm2
Q.5 Find the area (in an 2 ) and the diameter I in cm). respective.ly. of a circle \\"bose circuwferroce is 40n cm:'
Ans '1 1- 4007f and 40
X 2. 40 and 400 n
X 3. 400 and 40
X 4. 40 and 400
Q.21 Tbelmgthofa m:taoglcis fivetimrsoflts bceadtb. lftbeaira of t h e ~ is 31~ cm2 • then "'1w is tbe length of
~ ~ e?
Ans .r 1. 125 cm
X 2. 120 cm
K 3. 135 cm
X 4. 130cm
Q.21
length ( in cm) of die body diagonal of the cuboid? -
A solid mecallic cube of side 20 cm is melted and recasc into a cuboid of le~ ➔o cm and breadth 40 cm. What is the
Ans
.,I ,. 5 ✓ 129
X 2. 1 29-Js
X 3- 1s#3
X 4· 43v'Is
Q.25 \Vhat is the length (in cm) of the longest rod that can be fined in a box of dimensions 28 cm x 4 cm x 10 cm?
Ans ,., 1 . 30
X 2. 36
X 3. 42
X 4. 25
Q.4 A solid metallic cube of side 4.~ cm is melted and recasl in the form of a wire of radius 2 mm. Find thie length (in cm) of
22
the ,vire. (Use "= T)
Ans X ,. 338.s
X 2. 767.6
x 3. 2110.4
.., 4 677.6
Q. 9 What is the radius of the circle ,,rbose area is equal to the sum of the areas of t\vo circles ,vbose radii are 15 cm and 8
cm?
Ans X 1- 13 cm
X 2. 15 cm
.,/ 3. 17 cm
X 4. 14cm
Q.20 If the measures of the sides of a cuboid are 8 cm. 6 cm and 10 cm. then the volume (in cm3 ) of the cuboid. is:
Ans X 1. 840
.,,/ 2. 480
X 3. 540
X 4. 680
I
Q.5 The .ratio of the length and the perimeter ofa rectangle is 2 : 7. What is the ratio of the length and breadth of the
rectangJe'!
Ans X ,. 5 : 4
X 2. 4: s
X 3. 5: 3
.; 4 4:3
Q.22 If the brea.dtb and perimeter of a rectangle are in the ratio l : 8 and the area of rectangle is 363 an2 • then the breadrh of
the rectangle is:
Ans ~ 1. 11 cm
X 2. 13 cm
x 3. 12 cm
X 4. 10cm
Q.20 The volume of a right circular cone is 9::!4 cm 3. If its height is 18 cm. then the area of its base (in cm2) is:
Ans X 1. 198
X 2. 132
X 3. 176
. ; 4. 154
Q.5 The area of a field in the shape of a hexagon is 2400 ../3m 2 • "'bat will be the cost of fencing jr at~ 18.50 per metre?
Ans X ,. t51so
X 2. t555o
~ 3. t4440
X 4. t5920
