Mensuration Practice Test 10

Question : 11 of 40

Marks: +1, -0

The base and the other side of an isosceles triangle is 12 cm and 10 cm respectively. Find its area and perimeter.

Solution:

H^2

P^2 + B^2

100 × 12 =

P^2

+ 62
100 - 36 =

P^2

64 =

P^2

P = 8
Area of the triangle =

1/2

× b × altitude
=

1/2× 12 × 8

= 48 sq. m
Perimeter = 10 + 10 + 12 = 32 cm.

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