AREA AND PERIMETER OF TRIANGLES WORD PROBLEMS WORKSHEET

Problem 1 :

The semi perimeter of a triangle having the length of its sides as 20 cm, 15 cm and 9 cm is

(a) 44 cm     (b) 21 cm     (c) 22 cm     (d) None

Solution

Problem 2 :

The angles of a triangle are in the ratio 5:3:7, then the triangle is

(a) Acute angled     (b) Obtuse angled

(c) Right triangle     (d) Isosceles triangle

Solution

Problem 3 :

The base of an isosceles triangle whose area is 12 cm² and one of the equal sides is 5 cm is

(a) 6 cm     (b) 8 cm     (c) Both a and b     (d) None of these

Solution

Problem 4 :

The length of each side of an equilateral triangle having an area of 9√3 cm² is

(a) 8 cm     (b) 36 cm     (c) 4 cm     (d) 6 cm

Solution

Problem 5 :

The length of the perpendicular drawn on the longest side of a scalene triangle is

(a) Largest     (b) Smallest     (c) No relation     (d) None

Solution

Problem 6 :

Semi perimeter of scalene triangle of side k, 2k and 3k is

(a) k     (b) 2k     (c) 3k     (d) None

Solution

Problem 7 :

If the area of an equilateral triangle is 16√3 cm², then the perimeter of the triangle is

(a) 48 cm     (b) 24 cm     (c) 12 cm     (d) 36 cm

Solution

Problem 8:

An isosceles right triangle has an area 8 cm². The length of its hypotenuse is 

(a) √32 cm     (b) √16 cm     (c) √48 cm     (d) √24 cm

Solution

Problem 9 :

The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at 0.09 per cm² is 

(a) 2.00     (b) 2.16     (c) 2.48     (d) 3.00

Solution