The figure shows a big square that is made up of a small square with area 121 cm
2 and 8 right-angled triangles with a base of 7 cm.
- Find the height of each triangle.
- Find the area of the big square.
(a)
Length of the small square
= √121
= 11 cm
Height of each triangle
= 11 + 7
= 18 cm
(b)
Length of the big square
= 18 + 7
= 25 cm
Area of the big square
= 25 x 25
= 625 cm
2 Answer(s): (a) 18 cm; (b) 625 cm
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