AREAS A1

Find the area of the triangle having base of 15cm and height of 20cm.

Solution

Area =  1 x base x height

             2

             base=15cm, height=20cm.

Area =  1 x 15 x 20

             2

Area =  1 x 15 x 20¹⁰     [canceling by 2]

             2₁

Area =  1 x 15 x 10

            

Area =  150

Hence Area is 150 cm²

TRY THIS……………………..

Area of a rectangle is 90 cm². Find its perimeter if its width is 5cm.