Question

The area of an isosceles triangle having base 2 cm and the length of one of the equal sides 4 cm is a. √ 15 cm² b. 2√ 45 cm² c. √ 20 cm² d. 4√ 15 cm²​

Answer 1

Answer:

a). √ 15 cm²

Step-by-step explanation:

Use formula of isosceles triangle:

∆=√s(s-a)(s-b)(s-c)