Question

How to solve this with working out please.

Answer 1

If it’s asking for the area then the formula is:
A= 1/2 b*h

A= Area B= Base h= Height

But if it’s asking for the perimeter then the formula is:
P= a+b+c

P= Perimeter A=side B= side C= base

Hope this helps!

Answer 2

11+0.48+0.23=11.71.