Question

MENTAL MATHS
1. If the ratio of the areas of two squares is 9:1, the ratio of their perimeters is
2. The radius of the circle whose circumference is 22 is
3. If the base of a triangle is twice its altitude and the altitude is 21, what is the area of the triar
4. The area of a rhombus with side 12 cm is 96 cm. Find its altitude,
5. 100 hectare is
sq. km.​

Answer 1

Answer:

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