Mensuration Practice Test 4

Question : 15 of 40

Marks: +1, -0

A square lamina is made from three square laminae, whose sides are 2 cm, 3 cm, and 6 cm. The side of the new square lamina is:

11 cm
10 cm
7 cm
9 cm

Validate

Solution:

Sides of three square laminas = 2 cm, 3 cm, 6 cm.
A square lamina can be made from 1, 4, 9 - - - unit square tiles.
⇒ Square lamina has square tiles
=

(2)^2 + (3)^2 + (6)^2

= 4 + 9 + 36
= 49
Side of new square lamina =

√{49}

= 7 cm.

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