读如图两幅图，回答问题：

    One sunny Sunday morning, Alex and Emma were playing football in the park. Their dad was sitting on a chair, reading a newspaper.

    Then Emma stopped and walked to Alex. “It's too hot,” she told him. “I think I need a sun hat.” “Me too!” Alex agreed.

    Emma looked at her dad's newspaper and said, “I have an idea.” She asked Dad for two sheets of newspaper and made each of them into a hat. Then she put one on Alex's head and the other on hers. “The hat is great!” Alex said.

    They sat down next to Dad and watched everyone in the park. Then the wind began to blow. Some people started flying kites. “I wish I had a kite,” Alex said. “Or a plane!” Emma said. She took off their hats and made them into two planes.

    They played with their planes until they heard thunder (雷声). “Oh, it's time to go home now,” Emma said. “Or all of us will get wet even if I make each of us a paper umbrella!”

有一个重为G₀牛顿的空心金属球用弹簧测力计吊着完全浸没入一种密度为ρ₁千克每立方米的液体中，此时弹簧测力计的示数为空心金属球重力的$\frac{1}{5}$，如图所示的另一容器，上部的横截面积为S₁平方米，底部的横截面积为S₂平方米，里面盛有密度为ρ₂千克每立方米的另一种液体，ρ₁：ρ₂=2：5，若把空心金属球放到这个容器的液体中待其静止后（容器足够大），液体对容器底部增加的压强为____ Pa，液体对容器底部增加的压力为  ____N（g取10N/Kg）．

3元6角=____角

7元5角=____角