Q1.
One can use Heron's formula if the sides of triangle are given (all three sides are given).
(a) Yes (b)No (c) Can't say
(d) None of these
Solution.
(a) Yes
Solution
Q2.
In Heron's formula 2s is .
(a) Perimeter (b) Semi-perimeter (c) Radius (d) Diameter
Solution.
(a) Perimeter
Solution
Q3.
If two sides of a triangle is 5 cm and 12 cm , its semi-perimeter is 15 cm. Find third side.
(a) 12 (b) 13 (c) 7 (d) 8
Solution.
(b) 13
Solution
Q4.
Euler's relation is ___________.
(a) V + F = E + 2 (b) V - F = E + 2 (c) V + F = E - 2 (d) V - F = E - 2
Solution.
(a) V + F = E + 2
Solution
Q5.
What is the formula of volume of right pyramid.
(a) 1/3 x area of the base x height.
(b) 1/4 x area of the base x height.
(c) 2/3 x area of the base x height.
(d) None of these
Solution.
(a) 1/3 x area of the base x height.
Solution
Q6.
Perimeter of the base is 40 cm, slant height is 30 cm, find the curved surface area of right pyramid.
(a) 600 cm2 (b) 500 cm2 (c) 900 cm2 (d) 400 cm2
Solution.
(a) 600 cm2
Solution
Q7.
The volume of a pyramid of base area 25 m2 and height is 36 m.
(a) 250 m2 (b) 100 m2
(c) 300 m2 (d) 200 m2
Solution.
(c) 300 m2
Solution
Q8.
What is the formula of volume of pyramid.
(a) 1/3 x Base area x height
(b) 2/3 x Base area x height
(c)
1/4 x Base area x height
(d) 1/3 x Perimeter of Base x height
Solution.
(a) 1/3 x Base area x height
Solution
Q9.
In a figure if sum of vertices and face are 10 then edges will be ________.
(a) 12 (b) 6 (c) 8 (d) 10
Solution.
(c) 8
Solution
Q10.
Perimeter of the base 100 m slant height is 30 m, find the curved surface area of pyramid.
(a) 1200 m2 (b) 1800 m2
(c) 1500 m2 (d) 600 m2
Solution.
(c) 1500 m2
Solution
