Question

Eva is working out the area of the triangle. The base is 7.8 cm and the length of one side is 6.3 cm. I multiply and then divide by 2. What mistake has Eva made?

Answer 1

Eva multiplied by two, and not 1/2.

Explanation:

To find the area of a triangle, you must multiply the base and the height by 1/2.

Height: 6.3cm

Base: 7.8cm

1/2×6.3×7.8= 24.57

Answer 2

1/2✖️7.8✖️6.3.

She needs to multiply 1/2 instead of dividing it by two.

Explanation:

Triangle area: 1/2✖️base✖️height