Fig. 7.1 shows an equilateral triangle with the lengths of its sides given in terms of a and b.
4a cm
3b cm
+
(a + b + c)cm
Fig. 7.1
Find a and b and hence find the length of the
sides of the triangle.

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?