Area of kite is 1/2 times the two diagonals. So, it would be 1/2 times 70 times 70. Solve it and you get 2450.
The answer is 2450 square cm. But the question is asking for meters so convert it. 1 cm is 0.01 in meters. 2450 times 0.01 equals 24.5 meters 24.5 square meters is your final answer.