# Similarity coefficient

The similarity ratio of two equilateral triangles is 4.3 (i.e., 43:10). The length of the side of the smaller triangle is 7.5 cm. Calculate the perimeter and area of the larger triangle.

### Correct answer:

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Calculation of an equilateral triangle.

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#### You need to know the following knowledge to solve this word math problem:

**geometry**- similarity of triangles
**arithmetic**- square root
- multiplication
**planimetrics**- area of a shape
- perimeter
- triangle

#### Units of physical quantities:

#### Grade of the word problem:

We encourage you to watch this tutorial video on this math problem: video1

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